A067056 - cp's OEIS frontend

A067056 a(n) = (1)(2 + 3 + 4 + ... + n) + (1 + 2)(3 + 4 + 5 + ... + n) + (1 + 2 + 3)(4 + 5 + 6 + ... + n) + ... + (1 + 2 + 3 + ... + n-1)n.

n	a(n)
1	1
2	2
3	14
4	54
5	154
6	364
7	756
8	1428
9	2508
10	4158
11	6578
12	10010
13	14742
14	21112
15	29512
16	40392
17	54264
18	71706
19	93366
20	119966
21	152306
22	191268
23	237820
24	293020
25	358020
26	434070
27	522522
28	624834
29	742574
30	877424
31	1031184
32	1205776
33	1403248
34	1625778
35	1875678
36	2155398
37	2467530

[1, 2, 14, 54, 154, 364, 756, 1428, 2508, 4158, 6578, 10010, 14742, 21112, 29512, 40392, 54264, 71706, 93366, 119966, 152306, 191268, 237820, 293020, 358020, 434070, 522522, 624834, 742574, 877424, 1031184, 1205776, 1403248, 1625778, 1875678, 2155398, 2467530]

cp's OEIS Frontend

A067056 a(n) = (1)(2 + 3 + 4 + ... + n) + (1 + 2)(3 + 4 + 5 + ... + n) + (1 + 2 + 3)(4 + 5 + 6 + ... + n) + ... + (1 + 2 + 3 + ... + n-1)n.

Table of values

List of values

cp's OEIS Frontend

A067056 a(n) = (1)*(2 + 3 + 4 + ... + n) + (1 + 2)*(3 + 4 + 5 + ... + n) + (1 + 2 + 3)*(4 + 5 + 6 + ... + n) + ... + (1 + 2 + 3 + ... + n-1)*n.

Table of values

List of values

A067056 a(n) = (1)(2 + 3 + 4 + ... + n) + (1 + 2)(3 + 4 + 5 + ... + n) + (1 + 2 + 3)(4 + 5 + 6 + ... + n) + ... + (1 + 2 + 3 + ... + n-1)n.