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A192661 Floor-Sqrt transform of central Stirling numbers of the second kind (A007820). 0
1, 1, 2, 9, 41, 206, 1150, 7023, 46279, 325845, 2432608, 19138508, 157893016, 1360356046, 12197663221, 113489506443, 1092914231524, 10869407462093, 111421588497433, 1175241503062627, 12735340966302227, 141585732942425447, 1612917155538690101 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..22.

FORMULA

a(n) = floor(sqrt(stirling2(2*n,n))).

MATHEMATICA

Table[Floor[Sqrt[StirlingS2[2n, n]]], {n, 0, 100}]

PROG

(Maxima) makelist(floor(sqrt(stirling2(2*n, n))), n, 0, 24);

CROSSREFS

Sequence in context: A270766 A181375 A152052 * A020038 A056845 A162273

Adjacent sequences:  A192658 A192659 A192660 * A192662 A192663 A192664

KEYWORD

nonn

AUTHOR

Emanuele Munarini, Jul 07 2011

STATUS

approved

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Last modified May 19 06:41 EDT 2019. Contains 323386 sequences. (Running on oeis4.)