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A281466 Number of nX5 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. 1
16, 78, 57, 130, 278, 534, 1106, 2362, 4901, 10240, 21532, 45098, 94623, 198599, 416401, 873836, 1833801, 3846744, 8071427, 16936552, 35534012, 74557187, 156437792, 328231477, 688691845, 1445010747, 3031892645, 6361482526 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A281469.

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +3*a(n-3) -4*a(n-4) -3*a(n-5) -a(n-6) -a(n-7) +8*a(n-8) -3*a(n-10) for n>15

EXAMPLE

Some solutions for n=4

..0..1..0..1..0. .0..1..1..0..1. .0..1..1..1..0. .0..0..1..0..0

..0..1..0..1..0. .0..0..1..0..1. .0..0..1..0..0. .1..0..1..1..0

..1..1..0..1..0. .1..0..1..0..0. .1..0..1..0..1. .1..0..0..1..0

..0..0..1..0..1. .1..0..1..1..0. .0..0..1..0..0. .1..1..0..1..0

CROSSREFS

Cf. A281469.

Sequence in context: A200873 A082966 A198182 * A302620 A195976 A302412

Adjacent sequences: A281463 A281464 A281465 * A281467 A281468 A281469

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 22 2017

STATUS

approved

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Last modified January 27 21:49 EST 2023. Contains 359849 sequences. (Running on oeis4.)