A155539 a(n) = n^(n+3) + (n+3)^n.

1, 5, 57, 945, 18785, 423393, 10609137, 292475249, 8804293473, 287589316833, 10137858491849, 383799398752905, 15536767912476993, 669920208810550337, 30659724555890596833, 1484638520651877849057, 75846305139481944586817

Offset: 0

Author

Vladimir Joseph Stephan Orlovsky, Jan 23 2009

Keywords

• nonn

Comments

1^4 + 4^1 = 5, 2^5 + 5^2 = 57, ...

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..300

Crossrefs

Cf. A046065, A051442, A007925, A051489, A153217, A076980.

Programs

Magma

[n^(n+3)+(n+3)^n: n in [0..20] ]; // Vincenzo Librandi, Aug 25 2011

Mathematica

lst={};Do[m=n+3;q=n^m+m^n;AppendTo[lst,q],{n,0,4!}];lst
Table[n^(n+3)+(n+3)^n,{n,0,20}] (* Harvey P. Dale, Aug 18 2024 *)

Extensions

Offset corrected by Arkadiusz Wesolowski, Aug 24 2011