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 A269218 Number of 5Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once. 1
 0, 103488, 6712704, 474091776, 30541426560, 1910809190712, 116322554833728, 6948456736101264, 408916976890552416, 23782890276972969552, 1370013927382609217472, 78294173211595616892096 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 5 of A269214. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 52 FORMULA Empirical recurrence of order 52 (see link above) EXAMPLE Some solutions for n=2 ..2..0. .0..1. .3..2. .2..2. .3..1. .2..0. .3..3. .3..3. .0..0. .1..0 ..1..0. .1..1. .1..1. .2..0. .0..1. .2..3. .2..3. .0..1. .2..2. .2..3 ..3..3. .1..3. .3..1. .2..3. .0..2. .3..0. .0..0. .0..2. .3..2. .3..3 ..3..3. .2..2. .3..2. .1..3. .0..1. .2..2. .0..2. .0..1. .0..2. .1..0 ..1..3. .2..2. .3..3. .2..1. .1..2. .3..2. .3..2. .1..1. .3..0. .0..1 CROSSREFS Cf. A269214. Sequence in context: A237572 A255210 A147526 * A237894 A171162 A235721 Adjacent sequences:  A269215 A269216 A269217 * A269219 A269220 A269221 KEYWORD nonn AUTHOR R. H. Hardin, Feb 20 2016 STATUS approved

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Last modified June 16 06:46 EDT 2019. Contains 324145 sequences. (Running on oeis4.)