A210278 (5n)!/5^n.

1, 24, 145152, 10461394944, 3892643213082624, 4963587213865915514880, 16976183027980227752723742720, 132264293969742655099733137120296960, 2088743125114618199924764850166056689336320, 61246577083125859615725138685776750112964471685120

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..90

Formula

E.g.f.: 1/(1-x^5/5).

Mathematica

Table[(5 n)!/5^n, {n, 0, 10}] (* Vincenzo Librandi, Feb 15 2013 *)

Prog

(Magma)[Factorial(5*n)/5^n: n in [0..10]]; // Vincenzo Librandi, Feb 15 2013

Crossrefs

Cf. A210277, A000680, A067630, A084939, A084940, A084941, A084942, A084943, A084944, A087127, A001147, A132101.

Sequence in context: A172628 A294318 A061527 * A201495 A258924 A179268

Adjacent sequences: A210275 A210276 A210277 * A210279 A210280 A210281

Keyword

nonn,easy

Author

Mohammad K. Azarian, Mar 20 2012

Status

approved