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A162135 Number of n X n 0..3 arrays with rows and columns, considered as 4-ary numbers, in strictly increasing order 0
4, 70, 12282, 20383931, 337547720906, 59996420905835268, 121724323699826555003445, 2953782468893892488974599595107 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

CROSSREFS

Sequence in context: A301586 A136465 A184576 * A047939 A088693 A322397

Adjacent sequences:  A162132 A162133 A162134 * A162136 A162137 A162138

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 25 2009

STATUS

approved

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Last modified September 18 12:05 EDT 2021. Contains 347527 sequences. (Running on oeis4.)