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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
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
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Feb 16 2010
STATUS
approved

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)