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A162031 Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and all but the outermost 5 rows or columns zero 1
94285792211, 11778747022246, 1283576626918362, 129451129451003934, 12084539407794011516, 1047392972894816082114, 84596291735228118505060, 6391283691078330074895722, 453294362546405937016527962 (list; graph; refs; listen; history; text; internal format)
OFFSET

10,1

LINKS

R. H. Hardin, Table of n, a(n) for n=10..21

CROSSREFS

Sequence in context: A234052 A104831 A231235 * A204348 A159474 A159757

Adjacent sequences:  A162028 A162029 A162030 * A162032 A162033 A162034

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 25 2009

STATUS

approved

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Last modified August 16 00:08 EDT 2022. Contains 356150 sequences. (Running on oeis4.)