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A173316 6*n! - 1. 6
5, 5, 11, 35, 143, 719, 4319, 30239, 241919, 2177279, 21772799, 239500799, 2874009599, 37362124799, 523069747199, 7846046207999, 125536739327999, 2134124568575999, 38414242234367999, 729870602452991999 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

FORMULA

a(0)=5, a(n) = n*a(n-1)+n-1. - Vincenzo Librandi, Sep 30 2013

MATHEMATICA

Table[6 n! - 1, {n, 0, 25}] (* Vincenzo Librandi, Sep 30 2013 *)

PROG

(MAGMA) [6*Factorial(n)-1: n in [0..25]]; /* or */ [5] cat [n eq 1 select n+4 else n*Self(n-1)+n-1: n in [1..25] ]; // Vincenzo Librandi, Sep 30 2013

CROSSREFS

Cf. sequences of the type k*n!-1: A033312 (k=1), A020543 (k=2), A173323 (k=3), A173321 (k=4), A173317 (k=5).

Sequence in context: A298955 A299591 A350920 * A242325 A098331 A222575

Adjacent sequences:  A173313 A173314 A173315 * A173317 A173318 A173319

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Feb 16 2010

STATUS

approved

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Last modified August 8 21:32 EDT 2022. Contains 356016 sequences. (Running on oeis4.)