A036502 Numerator of n^(n-2)/n!.

1, 1, 1, 2, 25, 9, 2401, 2048, 59049, 15625, 214358881, 248832, 137858491849, 564950498, 21357421875, 2199023255552, 168377826559400929, 282429536481, 288441413567621167681, 1600000000000000, 1962371317204369449, 11119834626984462962

Offset

1,4

Links

Table of n, a(n) for n=1..22.

Example

1, 1/2, 1/2, 2/3, 25/24, 9/5, 2401/720, 2048/315, 59049/4480, 15625/567, 214358881/3628800, ...

Crossrefs

Cf. A036503, A036504.

Sequence in context: A321350 A249634 A161575 * A076449 A153811 A101962

Adjacent sequences: A036499 A036500 A036501 * A036503 A036504 A036505

Keyword

nonn,frac

Author

N. J. A. Sloane.

Status

approved