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A328978 Row sums of A329059. 2
1, 4, 27, 233, 2392, 28554, 393642, 6247511, 113612460, 2349157984, 54693260003, 1419193978899, 40649683449268, 1274332809446116, 43403931028963260, 1596092227004496195, 63024526636437361468, 2659705693841420725200, 119463071327339129567836, 5690148543901378578826660 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
a(n) = binomial(2 + 4*n, n)*2F1([1, -n], [-2 - 4*n], 1 + n)/(1 + n), where 2F1 is the hypergeometric function.
a(n) ~ exp(4) * n^(n-1). - Stefano Spezia, Sep 03 2020
MATHEMATICA
Table[(Binomial[2+4n, n]Hypergeometric2F1[1, -n, -2-4n, 1+n])/(1+n), {n, 0, 19}]
CROSSREFS
Sequence in context: A276029 A160883 A362274 * A185655 A181146 A303559
KEYWORD
nonn
AUTHOR
Stefano Spezia, Nov 05 2019
STATUS
approved

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Last modified May 26 08:20 EDT 2024. Contains 372809 sequences. (Running on oeis4.)