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A192573 a(n) = Sum_{k=0..n} floor(sqrt(Bell(k)))*floor(sqrt(Bell(n-k))). 2
1, 2, 3, 6, 11, 24, 52, 112, 251, 574, 1347, 3242, 7996, 20202, 52245, 138200, 373640, 1031702, 2907207, 8353892, 24460864, 72931232, 221265823, 682632254, 2140211338, 6814954528, 22027143227, 72228405060, 240154754720 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
Table[Sum[Floor[Sqrt[BellB[k]]]Floor[Sqrt[BellB[n-k]]], {k, 0, n}], {n, 0, 100}]
PROG
(Maxima) makelist(sum(floor(sqrt(belln(k)))*floor(sqrt(belln(n-k))), k, 0, n), n, 0, 28);
CROSSREFS
Sequence in context: A072187 A072374 A122852 * A284994 A107113 A156807
KEYWORD
nonn
AUTHOR
Emanuele Munarini, Jul 04 2011
STATUS
approved

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Last modified June 22 14:15 EDT 2024. Contains 373587 sequences. (Running on oeis4.)