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A317637 a(n) = n*(n+1)*(n+3). 0
0, 8, 30, 72, 140, 240, 378, 560, 792, 1080, 1430, 1848, 2340, 2912, 3570, 4320, 5168, 6120, 7182, 8360, 9660, 11088, 12650, 14352, 16200, 18200, 20358, 22680, 25172, 27840, 30690, 33728, 36960, 40392, 44030, 47880, 51948, 56240, 60762, 65520, 70520, 75768, 81270, 87032 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..43.

FORMULA

a(n) = 2*A077414(n+1).

MATHEMATICA

Table[n*(n + 1)*(n + 3), {n, 0, 43}] (* Giovanni Resta, Aug 10 2018 *)

PROG

(C)

#include<stdio.h>int main (){ int MAX = 43; int n = 0; int ris; while (n <= MAX) { ris = n * (n+1) * (n+3); printf("%d\t", n); printf("%d\n", ris); n+=1; }

return 0;

}

(PARI) first(n) = my(res = vector(n), val , d1=0, d2=8); for(i=1, n, res[i] = val; d1+=d2; d2+=6; val+=d1); res \\ David A. Corneth, Aug 13 2018

CROSSREFS

Cf. A077414.

Sequence in context: A299279 A184323 A004639 * A131769 A055832 A195753

Adjacent sequences:  A317634 A317635 A317636 * A317638 A317639 A317640

KEYWORD

nonn,easy

AUTHOR

Renzo Remotti, Aug 02 2018

STATUS

approved

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Last modified July 19 08:23 EDT 2019. Contains 325155 sequences. (Running on oeis4.)