A162129 Number of n X n symmetric 0..4 arrays with rows, considered as 5-ary numbers, in strictly increasing order

5, 60, 2760, 484080, 338068896, 978499965120, 12089923625362560, 651463262292403173120, 155573689115651381334403584, 166729737526490189184729707572224

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n=1..12

Crossrefs

Sequence in context: A303066 A350360 A293454 * A326726 A367337 A141967

Adjacent sequences: A162126 A162127 A162128 * A162130 A162131 A162132

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved