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A215743 Number of horizontal, vertical, diagonal and antidiagonal neighbor colorings of the odd squares of an n X 6 array with new integer colors introduced in row major order. 2
1, 2, 15, 364, 29084, 4851360, 1396243937, 621070325112, 397357555166874, 347527814415145984, 399998919849572992699, 588252794234398220649896, 1079540725180986409339750810, 2424777953471684438806091877856, 6559018912065982947335186853751568 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..50

EXAMPLE

Some solutions for n=3:

..x..0..x..1..x..2....x..0..x..1..x..2....x..0..x..1..x..2....x..0..x..1..x..0

..3..x..4..x..0..x....3..x..2..x..3..x....2..x..3..x..4..x....2..x..3..x..4..x

..x..2..x..5..x..4....x..4..x..0..x..1....x..1..x..2..x..1....x..5..x..2..x..1

CROSSREFS

Column 6 of A215745 and column 6 of A215847.

Sequence in context: A175563 A231443 A068391 * A254224 A071102 A272899

Adjacent sequences:  A215740 A215741 A215742 * A215744 A215745 A215746

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 22 2012

EXTENSIONS

a(0)=1 prepended and terms a(9) and beyond from Andrew Howroyd, Jun 25 2017

STATUS

approved

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Last modified May 11 03:49 EDT 2021. Contains 343784 sequences. (Running on oeis4.)