A244083 a(n) = numerator( n^n/(2*n)! ).

1, 1, 1, 3, 2, 125, 3, 16807, 512, 59049, 15625, 2357947691, 36, 1792160394037, 282475249, 1171875, 8589934592, 2862423051509815793, 1162261467, 5480386857784802185939, 195312500, 42728053589487, 5559917313492231481, 39471584120695485887249589623, 603979776

Offset

0,4

Comments

Denominators are in A244084.

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..100

Mathematica

Join[{1}, Table[Numerator[n^n/(2 n)!], {n, 1, 30}]]

Prog

(Magma) [Numerator(n^n/Factorial(2*n)): n in [0..30]];

Crossrefs

Cf. A000312, A010050, A244084.

Sequence in context: A152017 A076931 A076932 * A303683 A187825 A297532

Adjacent sequences: A244080 A244081 A244082 * A244084 A244085 A244086

Keyword

nonn,frac

Author

Vincenzo Librandi, Jun 20 2014

Status

approved