A089667 - cp's OEIS frontend

A089667 a(n) = S2(n,4), where S2(n, t) = Sum_{k=0..n} k^t *(Sum_{j=0..k} binomial(n,j))^2.

n	a(n)
0	0
1	4
2	265
3	5984
4	85722
5	944904
6	8771462
7	72095520
8	541127988
9	3785356752
10	25032083230
11	158102986624
12	961123994220
13	5656943319664
14	32386277835772
15	181019819948864
16	990793669704552
17	5323620638111136
18	28137973407708174
19	146552649537716992

[0, 4, 265, 5984, 85722, 944904, 8771462, 72095520, 541127988, 3785356752, 25032083230, 158102986624, 961123994220, 5656943319664, 32386277835772, 181019819948864, 990793669704552, 5323620638111136, 28137973407708174, 146552649537716992]

cp's OEIS Frontend

A089667 a(n) = S2(n,4), where S2(n, t) = Sum_{k=0..n} k^t *(Sum_{j=0..k} binomial(n,j))^2.

Table of values

List of values