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 A258886 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum 1
 242, 2304, 6072, 7225, 12544, 21025, 32400, 48841, 69696, 97969, 132496, 177241, 230400, 297025, 374544, 469225, 577600, 707281, 853776, 1026169, 1218816, 1442401, 1690000, 1974025, 2286144, 2640625, 3027600, 3463321, 3936256, 4464769 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A258894 LINKS R. H. Hardin, Table of n, a(n) for n = 1..68 EXAMPLE Some solutions for n=4 ..1..1..0..0..0..1....1..0..0..0..0..1....1..1..0..0..0..0....1..1..0..1..0..0 ..1..1..0..0..0..0....0..1..0..0..0..0....1..0..0..0..0..1....1..1..1..0..1..1 ..1..0..0..0..0..1....1..0..0..0..0..1....1..0..0..0..0..0....1..1..0..1..0..1 ..1..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..1....1..0..1..0..1..1 ..0..0..0..0..0..1....1..0..0..0..0..1....0..0..0..0..1..1....1..0..0..1..1..1 ..1..0..0..0..1..0....0..0..0..0..1..1....0..0..0..0..1..1....0..0..0..0..1..1 CROSSREFS Cf. A258894 Sequence in context: A258887 A234484 A160551 * A354563 A354565 A165935 Adjacent sequences: A258883 A258884 A258885 * A258887 A258888 A258889 KEYWORD nonn AUTHOR R. H. Hardin, Jun 14 2015 STATUS approved

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Last modified April 25 06:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)