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A104643 Number of arrangements that can be formed by taking n distinct things out of 25. 1
1, 25, 600, 13800, 303600, 6375600, 127512000, 2422728000, 43609104000, 741354768000, 11861676288000, 177925144320000, 2490952020480000, 32382376266240000, 388588515194880000, 4274473667143680000, 42744736671436800000, 384702630042931200000, 3077621040343449600000 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
a(n) = 25! / (25 - n)!.
EXAMPLE
a(3) = 25! / (25 - 3)! = 13800.
MATHEMATICA
Table[n!*Binomial[25, n], {n, 0, 25}] (* G. C. Greubel, Sep 01 2018 *)
PROG
(PARI) a(n) = 25! / (25 - n)! ; \\ Michel Marcus, Aug 12 2013
(Magma) [Factorial(n)*Binomial(25, n): n in [0..25]] // G. C. Greubel, Sep 01 2018
CROSSREFS
Sequence in context: A264220 A228827 A159661 * A162811 A163175 A163525
KEYWORD
nonn,fini
AUTHOR
Prashant Garg (prashant.garg1988(AT)yahoo.com), Feb 04 2008
STATUS
approved

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Last modified June 17 23:07 EDT 2024. Contains 373467 sequences. (Running on oeis4.)