The On-Line Encyclopedia of Integer Sequences (OEIS)

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A103472

Number of polyominoes consisting of 6 regular unit n-gons.
(history; published version)

#4 by Joerg Arndt at Sun Sep 25 10:40:15 EDT 2022

STATUS

editing

approved

#3 by Joerg Arndt at Sun Sep 25 10:40:09 EDT 2022

NAME

Number of polyominoes without holes consisting of 6 regular unit n-gons.

STATUS

approved

editing

Discussion

Sun Sep 25

10:40

Joerg Arndt: Correction suggested by author.

#2 by Russ Cox at Sat Mar 31 10:23:03 EDT 2012

AUTHOR

_Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), _, Feb 07 2005

Discussion

Sat Mar 31

10:23

OEIS Server: https://oeis.org/edit/global/354

#1 by N. J. A. Sloane at Sun Feb 20 03:00:00 EST 2005

NAME

Number of polyominoes without holes consisting of 6 regular unit n-gons.

DATA

12, 35, 118, 82, 118, 269, 585, 985, 1750, 1438, 1765, 2718, 4336, 6040, 8814, 7678, 8839, 11876, 16410, 20970, 27720, 24998, 27787, 34763, 44687, 54133, 67601, 62252, 67777, 81066, 99420, 116465, 140075, 130711, 140434, 163027, 193587, 221521

OFFSET

3,1

LINKS

S. Kurz, <a href="http://www.mathe2.uni-bayreuth.de/sascha/oeis/k-polyominoes.html">k-polyominoes</a>.

EXAMPLE

a(3)=12 because there are 12 polyiamonds consisting of 6 triangles and a(4)=35 because there are 35 polyominoes consisting of 6 squares.

CROSSREFS

Cf. A103469, A103470, A103471, A103473.

KEYWORD

nonn,new

AUTHOR

Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Feb 07 2005

STATUS

approved