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A026668
Sum{T(i,j)}, 0<=i<=n, 0<=j<=n, T given by A026659.
0
1, 3, 7, 17, 37, 79, 163, 359, 751, 1593, 3277, 7155, 14911, 31697, 65269, 142115, 295807, 629805, 1297801, 2821249, 5868145, 12507295, 25785595, 55992063, 116404999, 248297225, 512081677, 1111033773, 2308937965
OFFSET
0,2
CROSSREFS
Sequence in context: A065545 A110930 A026646 * A111210 A033489 A357212
KEYWORD
nonn
STATUS
approved