The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A356975 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A356975

a(n) is the number of n-celled pseudo-polyominoes with holes.
(history; published version)

#8 by Michael De Vlieger at Wed Sep 07 08:13:24 EDT 2022

STATUS

reviewed

approved

#7 by Joerg Arndt at Wed Sep 07 06:55:50 EDT 2022

STATUS

proposed

reviewed

#6 by Joerg Arndt at Wed Sep 07 04:11:21 EDT 2022

STATUS

editing

proposed

#5 by Joerg Arndt at Wed Sep 07 04:11:19 EDT 2022

KEYWORD

nonn,hard,more,changed

STATUS

proposed

editing

#4 by John Mason at Wed Sep 07 03:31:47 EDT 2022

STATUS

editing

proposed

#3 by John Mason at Wed Sep 07 03:31:14 EDT 2022

EXAMPLE

a(5)=3 because of:

O O O

O O O OO O O

OO O O O

#2 by John Mason at Wed Sep 07 02:53:53 EDT 2022

NAME

allocated for John Masona(n) is the number of n-celled pseudo-polyominoes with holes.

DATA

0, 0, 0, 1, 3, 28, 199, 1603, 12234, 93270, 697641, 5167477, 37913465

OFFSET

1,5

EXAMPLE

a(4)=1 because of:

O

O O

O

CROSSREFS

Cf. A030222, A001419.

KEYWORD

allocated

nonn,hard

AUTHOR

John Mason, Sep 07 2022

STATUS

approved

editing

#1 by John Mason at Wed Sep 07 02:53:53 EDT 2022

NAME

allocated for John Mason

KEYWORD

allocated

STATUS

approved