A332519 a(n) = 4*(n^2 + n - 2).

0, 16, 40, 72, 112, 160, 216, 280, 352, 432, 520, 616, 720, 832, 952, 1080, 1216, 1360, 1512, 1672, 1840, 2016, 2200, 2392, 2592, 2800, 3016, 3240, 3472, 3712, 3960, 4216, 4480, 4752, 5032, 5320, 5616, 5920, 6232, 6552, 6880, 7216, 7560, 7912, 8272, 8640, 9016, 9400, 9792

Offset

1,2

Comments

The first 6 nonzero values are the same as in A177723, but then they differ.

Links

Table of n, a(n) for n=1..49.

Formula

a(n) = A177723(n+5) for n = 1..7.

a(n) = 8 * A000096(n-1).

Mathematica

a[n]:=a[n]=4(n^2+n-2)

Prog

(PARI) apply( A332519(n)=(n^2+n-2)<<2, [1..55]) \\ M. F. Hasler, Apr 26 2022

Crossrefs

Cf. A000096, A177723.

Sequence in context: A316562 A221684 A247345 * A177723 A174321 A258258

Adjacent sequences: A332516 A332517 A332518 * A332520 A332521 A332522

Keyword

nonn,less

Author

Michael Terhoeven, Feb 15 2020

Status

approved