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 A234242 Number of (n+1) X (2+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings). 1
 6706, 99630, 1520024, 23428586, 361889580, 5604275160, 86776363660, 1346057282610, 20871073347970, 324182229853644, 5033011970696922, 78280166521734740, 1216896695697878704, 18952578238483018624 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 45 FORMULA Empirical recurrence of order 45 (see link above). EXAMPLE Some solutions for n=2: 0 2 1 4 2 1 6 6 7 5 7 2 4 0 4 2 6 2 3 5 4 0 4 1 2 2 3 6 4 7 2 6 3 7 5 7 1 7 5 3 7 4 3 5 4 6 4 7 1 1 2 0 2 1 0 0 0 0 4 4 0 6 1 CROSSREFS Column 2 of A234245. Sequence in context: A031846 A289516 A239565 * A252602 A224689 A190292 Adjacent sequences: A234239 A234240 A234241 * A234243 A234244 A234245 KEYWORD nonn AUTHOR R. H. Hardin, Dec 21 2013 STATUS approved

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Last modified May 31 23:42 EDT 2023. Contains 363068 sequences. (Running on oeis4.)