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A182018 Row square-sums of triangle A210658. 1
1, 5, 29, 219, 2011, 20911, 235543, 2801821, 34667941, 441977129, 5768828529, 76743400197, 1037119411309, 14202556969109, 196703352545189, 2751033268619879, 38804220883714919, 551466071408325299, 7889476725800450699, 113542652361590443679 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..19.

FORMULA

a(n) = sum(sum(binomial(2i,i)/(i+1),i=k..n))^2, k=0..n).

MATHEMATICA

Table[Sum[Sum[Binomial[2i, i]/(i+1), {i, k, n}]^2, {k, 0, n}], {n, 0, 40}]

PROG

(Maxima) makelist(sum(sum(binomial(2*i, i)/(i+1), i, k, n)^2, k, 0, n), n, 0, 20);

CROSSREFS

Cf. A210658.

Sequence in context: A243952 A094856 A057623 * A309260 A087662 A113012

Adjacent sequences:  A182015 A182016 A182017 * A182019 A182020 A182021

KEYWORD

nonn

AUTHOR

Emanuele Munarini, Apr 06 2012

STATUS

approved

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Last modified September 22 21:07 EDT 2020. Contains 337291 sequences. (Running on oeis4.)