This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A280797 a(n) = (n^n - 1)(n^n + 1)/(n + 1). 0
 0, 0, 5, 182, 13107, 1627604, 310968905, 84777884106, 31274997412295, 15009463529699912, 9090909090909090909, 6783562448903313426110, 6115142092568526471803195, 6552380728090615475599972572, 8231779712749862388415318790417, 11984441202055255416780710220336914 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS FORMULA a(n) = A117812(n)/(n + 1). EXAMPLE a(0) = 0 because (0^0 - 1)*(0^0 + 1)/(0 + 1) = 0, a(1) = 0 because (1^1 - 1)*(1^1 + 1)/(1 + 1) = 0, a(2) = 5 because (2^2 - 1)*(2^2 + 1)/(2 + 1) = 5. MATHEMATICA Table[If[n == 0, 0, (n^n - 1) (n^n + 1)/(n + 1)], {n, 0, 15}] (* Michael De Vlieger, Jan 09 2017 *) PROG (MAGMA) [(n^(2*n)-1)/(n+1): n in [0..15)]; CROSSREFS Cf. A000312, A117812. Sequence in context: A256286 A304277 A208403 * A094081 A189645 A228694 Adjacent sequences:  A280794 A280795 A280796 * A280798 A280799 A280800 KEYWORD nonn AUTHOR Juri-Stepan Gerasimov, Jan 08 2017 STATUS approved

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

Last modified December 9 03:27 EST 2019. Contains 329872 sequences. (Running on oeis4.)