A162134 Number of n X n 0..2 arrays with rows and columns, considered as 3-ary numbers, in strictly increasing order.

3, 20, 836, 201620, 281496540, 2380096698130, 128314914063822802, 46152578104448335601514, 114857924445009628731733814896

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Crossrefs

Sequence in context: A300917 A089943 A108699 * A296408 A002857 A345328

Adjacent sequences: A162131 A162132 A162133 * A162135 A162136 A162137

Keyword

nonn

Author

R. H. Hardin, Jun 25 2009

Status

approved