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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
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified May 19 16:51 EDT 2019. Contains 323395 sequences. (Running on oeis4.)