A162032 Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and all but the outermost 6 rows or columns zero

10047909839840456, 4135500013015675194, 1525840087572037076878, 524023138099376542650471, 167845700873331480283609254, 50295945454485891799507352453, 14146448691247913222947833130009

Offset

12,1

Links

R. H. Hardin, Table of n, a(n) for n=12..21

Crossrefs

Sequence in context: A378476 A329948 A160405 * A373560 A141621 A095432

Adjacent sequences: A162029 A162030 A162031 * A162033 A162034 A162035

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved