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A036502 Numerator of n^(n-2)/n!. 1
1, 1, 1, 2, 25, 9, 2401, 2048, 59049, 15625, 214358881, 248832, 137858491849, 564950498, 21357421875, 2199023255552, 168377826559400929, 282429536481, 288441413567621167681, 1600000000000000, 1962371317204369449, 11119834626984462962 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 21 14:54 EDT 2020. Contains 337272 sequences. (Running on oeis4.)