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URL: https://oeis.org/A144276

⇱ A144276 - OEIS

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A144276

Row sums of triangle A144275 (called S2hat(-2)).

1

1, 3, 13, 97, 997, 13585, 225625, 4454801, 101415881, 2618639033, 75524367593, 2406745316697, 83950853842617, 3181371937414425, 130135485102246265, 5714800778645325881, 268144898273200109561, 13387708871579930596793, 708640690235801235876153

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..19.

FORMULA

a(n) = Sum_{m=1..n} A144275(n,m), n>=1.

CROSSREFS

Sequence in context: A228160 A371319 A085023 * A083770 A084725 A180709

Adjacent sequences: A144273 A144274 A144275 * A144277 A144278 A144279

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Oct 09 2008

STATUS

approved