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A192576 a(n) = sum(binomial(n,k)*floor(sqrt(Bell(k))),k=0..n). 0
1, 2, 4, 9, 22, 58, 163, 478, 1439, 4415, 13780, 43757, 141400, 465016, 1555961, 5294885, 18315089, 64357854, 229601019, 831132731, 3051030786, 11351968321, 42788503744, 163309466037, 630861836558, 2465577001903, 9745376900983 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
Table[Sum[Binomial[n, k]Floor[Sqrt[BellB[k]]], {k, 0, n}], {n, 0, 100}]
PROG
(Maxima) makelist(sum(binomial(n, k)*floor(sqrt(belln(k))), k, 0, n), n, 0, 28);
CROSSREFS
The Bell numbers are A000110.
Sequence in context: A249563 A124380 A176084 * A059019 A249560 A121953
KEYWORD
nonn
AUTHOR
Emanuele Munarini, Jul 04 2011
STATUS
approved

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Last modified July 21 06:08 EDT 2024. Contains 374463 sequences. (Running on oeis4.)