A162135 Number of n X n 0..3 arrays with rows and columns, considered as 4-ary numbers, in strictly increasing order.

4, 70, 12282, 20383931, 337547720906, 59996420905835268, 121724323699826555003445, 2953782468893892488974599595107

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Crossrefs

Sequence in context: A136465 A184576 A367523 * A047939 A354859 A088693

Adjacent sequences: A162132 A162133 A162134 * A162136 A162137 A162138

Keyword

nonn

Author

R. H. Hardin, Jun 25 2009

Status

approved