A051489 a(n) = n^(n+2) + (n+2)^n.

1, 4, 32, 368, 5392, 94932, 1941760, 45136576, 1173741824, 33739007300, 1061917364224, 36314872537968, 1340612376924160, 53132088082450132, 2250010931847299072, 101388548387203175168, 4843806013966239465472

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

• G. C. Greubel, Table of n, a(n) for n = 0..350

Crossrefs

Cf. A007925, A046065, A051442. - Vladimir Joseph Stephan Orlovsky, Jan 23 2009

Programs

Magma

[n^(n+2) + (n+2)^n: n in [0..30]]; // G. C. Greubel, Jul 14 2021

Mathematica

Table[n^(n+2)+(n+2)^n,{n,0,20}] (* Harvey P. Dale, Jul 28 2025 *)

Sage

[n^(n+2) + (n+2)^n for n in (0..30)] # G. C. Greubel, Jul 14 2021