A192662 Floor-Sqrt transform of (signless) central Stirling numbers of the first kind (A187646).

1, 1, 3, 15, 82, 518, 3652, 28123, 233733, 2075597, 19542826, 193908574, 2017519282, 21921326573, 247882099197, 2908534759303, 35322473621014, 443010881207381, 5726889928765906, 76175517383629544, 1040964231177762308, 14594191539892866665

Offset: 0

Author

Emanuele Munarini, Jul 07 2011

Keywords

• nonn

Crossrefs

Cf. A187646.

Programs

Mathematica

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

Maxima

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

Formula

a(n) = floor(sqrt(|Stirling1(2*n,n)|)).