A162131 Number of n X n symmetric 0..6 arrays with rows, considered as 7-ary numbers, in strictly increasing order

7, 168, 20664, 13420008, 48646451448, 1026088816521384, 129626970213767748408, 100146990341371129870445928, 480706456216438726881369732950904, 14515325887679952129833652850645598932008

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n=1..11

Crossrefs

Sequence in context: A165388 A124126 A086373 * A258299 A012067 A012145

Adjacent sequences: A162128 A162129 A162130 * A162132 A162133 A162134

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved