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A027132
a(n) = diagonal sum of right justified array T given by A027113.
0
1, 2, 4, 12, 27, 70, 182, 477, 1269, 3413, 9249, 25255, 69389, 191680, 532026, 1482926, 4148949, 11647260, 32797042, 92608175, 262157690, 743845685, 2115093984, 6026041793, 17199956143, 49176678286, 140824260498, 403865784020
OFFSET
0,2
CROSSREFS
Sequence in context: A291406 A219752 A242536 * A148172 A148173 A148174
KEYWORD
nonn
STATUS
approved