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A302271 Number of 7 X n 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
64, 8192, 126162, 2727755, 49315068, 982041385, 18964765818, 367139778723, 7164671008446, 139068565629649, 2707332855884141, 52711100145391758, 1025817729699289943, 19978633136068450415, 389042172263675668618 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A302265.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5:

  0 0 0 0 0     0 0 0 0 0     0 0 0 0 0     0 0 0 0 0

  0 0 1 1 1     0 0 1 1 0     0 0 1 1 1     0 0 1 1 0

  1 0 1 0 0     1 0 1 1 0     1 0 1 0 0     1 0 1 0 0

  0 1 0 1 0     1 0 0 1 0     1 0 1 1 0     0 0 1 1 0

  1 1 0 0 1     1 0 1 1 0     0 0 0 1 0     1 0 1 0 0

  1 0 1 0 1     1 0 1 0 1     1 1 0 1 1     0 0 1 0 0

  0 1 1 0 1     1 1 0 0 1     0 0 0 0 0     1 1 1 0 0

CROSSREFS

Cf. A302265.

Sequence in context: A084004 A264016 A160448 * A301847 A302970 A291832

Adjacent sequences:  A302268 A302269 A302270 * A302272 A302273 A302274

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 04 2018

STATUS

approved

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Last modified May 27 13:43 EDT 2022. Contains 354097 sequences. (Running on oeis4.)