A343875 - OEIS

A343875

Array read by antidiagonals: T(n,k) is the number of n X n nonnegative integer matrices with sum of elements equal to k, up to rotations and reflections.

1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 3, 3, 1, 0, 1, 4, 11, 3, 1, 0, 1, 8, 31, 24, 6, 1, 0, 1, 10, 84, 113, 55, 6, 1, 0, 1, 16, 198, 528, 410, 99, 10, 1, 0, 1, 20, 440, 2003, 2710, 1091, 181, 10, 1, 0, 1, 29, 904, 6968, 15233, 10488, 2722, 288, 15, 1, 0, 1, 35, 1766, 21593, 75258, 82704, 34399, 5806, 461, 15, 1

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OFFSET

0,13

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..1325

EXAMPLE

Array begins:

=====================================================

n\k | 0 1 2 3 4 5 6 7

----+------------------------------------------------

0 | 1 0 0 0 0 0 0 0 ...

1 | 1 1 1 1 1 1 1 1 ...