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

94285792211, 11778747022246, 1283576626918362, 129451129451003934, 12084539407794011516, 1047392972894816082114, 84596291735228118505060, 6391283691078330074895722, 453294362546405937016527962

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