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A192662 Floor-Sqrt transform of (signless) central Stirling numbers of the first kind (A187646). 0
1, 1, 3, 15, 82, 518, 3652, 28123, 233733, 2075597, 19542826, 193908574, 2017519282, 21921326573, 247882099197, 2908534759303, 35322473621014, 443010881207381, 5726889928765906, 76175517383629544, 1040964231177762308, 14594191539892866665 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..21.

FORMULA

a(n) = floor(sqrt(|stirling1(2*n,n)|)).

MATHEMATICA

Table[Floor[Sqrt[Abs[StirlingS1[2n, n]]]], {n, 0, 100}]

PROG

(Maxima) makelist(floor(sqrt(abs(stirling1(2*n, n)))), n, 0, 24);

CROSSREFS

Sequence in context: A014276 A006964 A203507 * A213096 A052451 A026019

Adjacent sequences:  A192659 A192660 A192661 * A192663 A192664 A192665

KEYWORD

nonn

AUTHOR

Emanuele Munarini, Jul 07 2011

STATUS

approved

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Last modified November 24 20:34 EST 2020. Contains 338616 sequences. (Running on oeis4.)