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Search: id:A130463
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A130463 First column of square array A130462. +0
3
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 (list; graph; listen)
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: A118718 A058781 A100462 this_sequence A124425 A118398 A047974

Adjacent sequences: A130460 A130461 A130462 this_sequence A130464 A130465 A130466

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), May 26 2007

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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