The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A280318 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A280318

a(n) is the n-th permutation generated by Heap's algorithm, represented by row number of A055089.
(history; published version)

#22 by N. J. A. Sloane at Sun Jan 01 02:04:27 EST 2017

STATUS

proposed

approved

#21 by Tilman Piesk at Sat Dec 31 18:49:55 EST 2016

STATUS

editing

proposed

#20 by Tilman Piesk at Sat Dec 31 18:47:44 EST 2016

NAME

Permutations a(n) is the n-th permutation generated by Heap's algorithm, represented by row number of A055089.

#19 by Tilman Piesk at Sat Dec 31 18:41:36 EST 2016

NAME

Permutations generated by Heap's algorithm, represented by index row number of A055089.

#18 by Tilman Piesk at Sat Dec 31 18:33:38 EST 2016

NAME

Permutation of the nonnegative integers Permutations generated by Heap's algorithm applied to the indices , represented by index number of A055089.

STATUS

approved

editing

Discussion

Sat Dec 31

18:41

Tilman Piesk: Probably "as" was too terse, so I replaced it with "represented by". I often do things like "a(n) is partition soandso, represented by index number of A194602" (see A198380) or "a(n) is permutation soandso, represented by row number of A055089". And I just realize that I have to replace "index number" by "row number".

#17 by N. J. A. Sloane at Sat Dec 31 18:22:44 EST 2016

STATUS

editing

approved

#16 by N. J. A. Sloane at Sat Dec 31 18:22:41 EST 2016

NAME

Permutation of the nonnegative integers generated by Heap's algorithm as index numbers applied to the indices of A055089.

#15 by N. J. A. Sloane at Sat Dec 31 18:19:28 EST 2016

NAME

Permutations Permutation of the nonnegative integers generated by Heap's algorithm as index numbers of A055089.

STATUS

proposed

editing

Discussion

Sat Dec 31

18:21

N. J. A. Sloane: I changed the beginning of the definition since this is a single permutation.  But the word "as" in the definition doesn't make sense to me.  How  about "applied to"?  I will make that change - I hope you agree.

#14 by Jon E. Schoenfield at Sat Dec 31 17:37:39 EST 2016

STATUS

editing

proposed

#13 by Jon E. Schoenfield at Sat Dec 31 17:37:27 EST 2016

COMMENTS

This is a permutation of the non-negative nonnegative integers. It divides naturally in sections of factorial length, so it can be seen as a triangle with row lengths A094258:

STATUS

proposed

editing

Discussion

Sat Dec 31

17:37

Jon E. Schoenfield: ("nonnegative (not non-negative)", per the OEIS Style Sheet)