The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A229554 a(n) = 7*n! + 1. 1
8, 8, 15, 43, 169, 841, 5041, 35281, 282241, 2540161, 25401601, 279417601, 3353011201, 43589145601, 610248038401, 9153720576001, 146459529216001, 2489811996672001, 44816615940096001, 851515702861824001, 17030314057236480001, 357636595201966080001 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
a(0)=8, a(n) = n*a(n-1)-n+1.
E.g.f.: 7/(1-x)+exp(x). - Geoffrey Critzer, Sep 30 2013
MATHEMATICA
Table[7 n! + 1, {n, 0, 25}]
PROG
(Magma) [7*Factorial(n)+1: n in [0..25]]; /* or */ [8] cat [n eq 1 select n+7 else n*Self(n-1)-n+1: n in [1..25]];
CROSSREFS
Cf. sequences of the type k*n!+1: A038507 (k=1), A052898 (k=2), A173324 (k=3), A173322 (k=4), A173319 (k=5), A173314 (k=6), this sequence (k=7).
Sequence in context: A335896 A168337 A109540 * A298182 A040057 A205709
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Sep 30 2013
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 25 09:23 EDT 2024. Contains 372786 sequences. (Running on oeis4.)