A329440 - OEIS

A329440

Triangle read by rows: n-th row gives positions of ones in A329126(n) in decreasing order.

0, 2, 1, 5, 3, 1, 5, 4, 3, 2, 17, 13, 9, 5, 1, 6, 5, 4, 3, 2, 1, 37, 31, 25, 19, 13, 7, 1, 10, 9, 8, 7, 6, 5, 4, 3, 18, 16, 14, 12, 10, 8, 6, 4, 2, 18, 17, 14, 13, 10, 9, 6, 5, 2, 1, 101, 91, 81, 71, 61, 51, 41, 31, 21, 11, 1, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4

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OFFSET

1,2

COMMENTS

Does the n-th row always contain n entries?

Do the rows always form an n term arithmetic progression?

Conjecture: the last value in each row is A051903(n).

LINKS

Table of n, a(n) for n=1..76.

EXAMPLE

Table begins:

2, 1

5, 3, 1

5, 4, 3, 2

17, 13, 9, 5, 1

6, 5, 4, 3, 2, 1

37, 31, 25, 19, 13, 7, 1

For example, when n = 5, x^17 + x^13 + x^9 + x^5 + x is a multiple of 5 for all integers x > 1.

CROSSREFS

Cf. A051903, A329126.

Sequence in context: A230038 A277448 A177760 * A339494 A104731 A240192

Adjacent sequences: A329437 A329438 A329439 * A329441 A329442 A329443

KEYWORD

nonn,tabl

AUTHOR

Peter Kagey, Nov 13 2019

STATUS

approved