A089658 - cp's OEIS frontend

A089658 a(n) = S1(n,1), where S1(n, t) = Sum_{k=0..n} (k^t * Sum_{j=0..k} binomial(n,j)).

n	a(n)
0	0
1	2
2	11
3	42
4	136
5	400
6	1104
7	2912
8	7424
9	18432
10	44800
11	107008
12	251904
13	585728
14	1347584
15	3072000
16	6946816
17	15597568
18	34799616
19	77201408
20	170393600
21	374341632
22	818937856
23	1784676352
24	3875536896
25	8388608000
26	18102616064
27	38956695552
28	83617644544
29	179046449152

[0, 2, 11, 42, 136, 400, 1104, 2912, 7424, 18432, 44800, 107008, 251904, 585728, 1347584, 3072000, 6946816, 15597568, 34799616, 77201408, 170393600, 374341632, 818937856, 1784676352, 3875536896, 8388608000, 18102616064, 38956695552, 83617644544, 179046449152]

cp's OEIS Frontend

A089658 a(n) = S1(n,1), where S1(n, t) = Sum_{k=0..n} (k^t * Sum_{j=0..k} binomial(n,j)).

Table of values

List of values