A328088 - cp's OEIS frontend

A328088 a(n) = Sum_{k=4..n} ( binomial(n,k)(k-2)(2^k-2*k-2) ) - (2^n-n-1).

n	a(n)
4	1
5	94
6	683
7	3520
8	15461
9	61826
10	232543
11	838276
12	2930585
13	10014406
14	33633299
15	111448904
16	365403853
17	1187875594
18	3834883271
19	12309375244
20	39320806145
21	125090127950
22	396537120379
23	1253145232336
24	3949433330741
25	12416933938834
26	38953666980143
27	121962851990420
28	381179210953321
29	1189376848680406
30	3705576521235683

[1, 94, 683, 3520, 15461, 61826, 232543, 838276, 2930585, 10014406, 33633299, 111448904, 365403853, 1187875594, 3834883271, 12309375244, 39320806145, 125090127950, 396537120379, 1253145232336, 3949433330741, 12416933938834, 38953666980143, 121962851990420, 381179210953321, 1189376848680406, 3705576521235683]

cp's OEIS Frontend

A328088 a(n) = Sum_{k=4..n} ( binomial(n,k)(k-2)(2^k-2*k-2) ) - (2^n-n-1).

Table of values

List of values

cp's OEIS Frontend

A328088 a(n) = Sum_{k=4..n} ( binomial(n,k)*(k-2)*(2^k-2*k-2) ) - (2^n-n-1).

Table of values

List of values

A328088 a(n) = Sum_{k=4..n} ( binomial(n,k)(k-2)(2^k-2*k-2) ) - (2^n-n-1).