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A130463
First column of square array A130462.
2
1, 1, 3, 7, 25, 75, 275, 927, 3438, 12306, 46131, 170695, 646399, 2439582, 9321149, 35629281, 137156187, 528893353, 2048588717, 7950709147, 30951860693, 120722736668, 471927571577, 1847953114948, 7248961671334, 28476897249963
OFFSET
0,3
EXAMPLE
Square array A130462 begins:
(1), 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, ...;
(1), (2), 3, 4, 5, 6, 7, 8, 9, 10, ...;
(3), 7, (12), 18, 25, 33, 42, 52, ...;
(7), 25, 50, (83), 125, 177, 240, ...;
(25), 75, 200, 377, (617), 932, ...;
(75), 275, 652, 1584, 2919, (4759), ...; ...
where row n+1 equals the partial sums of the sequence resulting from removing the terms in the first column and main diagonal from row n.
CROSSREFS
Cf. A130462 (array), A130464 (main diagonal).
Sequence in context: A148731 A148732 A151269 * A148733 A148734 A124425
KEYWORD
nonn
AUTHOR
Paul D. Hanna, May 26 2007
STATUS
approved