This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A098462 #11 Mar 19 2020 08:57:19 %S A098462 2,3,13,91,881,10901,164305,2920695,59823937,1387420489,35937424601, %T A098462 1028320041299,32214185570737,1096589879846397,40304932850948641, %U A098462 1590815394987706351,67107935949376420097,3013151821625033296145,143473758373207779108265 %N A098462 a(n) = n^n + (n+1)^n. %F A098462 From _Alois P. Heinz_, Mar 19 2020: (Start) %F A098462 a(n) = A000312(n) + A000169(n+1). %F A098462 E.g.f.: (x-LambertW(-x))/((1+LambertW(-x))*x). (End) %o A098462 (PARI) a(n) = n^n + (n+1)^n; \\ _Jinyuan Wang_, Mar 19 2020 %Y A098462 Cf. A000169, A000312, A045531 (n^n-(n-1)^n), A055869 ((n+1)^n-n^n). %K A098462 nonn %O A098462 0,1 %A A098462 _Hugo Pfoertner_, Sep 08 2004 %E A098462 a(0)=2 prepended by _Alois P. Heinz_, Mar 19 2020