A146092 Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 4 and every element equal to at least one neighbor.

1, 235, 1894, 5928, 14762, 31448, 59802, 104420, 170678, 264732, 393518, 564752, 786930, 1069328, 1422002, 1855788, 2382302, 3013940, 3763878, 4646072, 5675258, 6866952, 8237450, 9803828, 11583942, 13596428, 15860702

Offset

4,2

Links

Table of n, a(n) for n=4..30.

Crossrefs

Sequence in context: A091427 A068663 A129857 * A257310 A268890 A254676

Adjacent sequences: A146089 A146090 A146091 * A146093 A146094 A146095

Keyword

nonn

Author

R. H. Hardin Apr 14 2009

Status

approved