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A128324
Row sums of triangle A128320.
4
1, 2, 8, 31, 159, 955, 6677, 51308, 429868, 3847548, 36599474, 366515450, 3848812068, 42154442638, 480103999452, 5666303543327, 69139729751267, 870092119451903, 11272494698299169, 150074841511853609
OFFSET
0,2
PROG
(PARI)
CROSSREFS
Cf. A128320 (triangle), A128321 (column 0), A128322 (column 1), A128323 (column 2); variant: A115084.
Sequence in context: A308336 A120774 A261052 * A264572 A279692 A332444
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Feb 25 2007
STATUS
approved