A034857 - cp's OEIS frontend

A034857 a(n) = C(n+2,3) + 2C(n,2) + 2(n-2).

n	a(n)
1	-1
2	6
3	18
4	36
5	61
6	94
7	136
8	188
9	251
10	326
11	414
12	516
13	633
14	766
15	916
16	1084
17	1271
18	1478
19	1706
20	1956
21	2229
22	2526
23	2848
24	3196
25	3571
26	3974
27	4406
28	4868
29	5361
30	5886
31	6444
32	7036
33	7663
34	8326
35	9026
36	9764
37	10541
38	11358
39	12216
40	13116
41	14059
42	15046
43	16078
44	17156
45	18281
46	19454
47	20676

[-1, 6, 18, 36, 61, 94, 136, 188, 251, 326, 414, 516, 633, 766, 916, 1084, 1271, 1478, 1706, 1956, 2229, 2526, 2848, 3196, 3571, 3974, 4406, 4868, 5361, 5886, 6444, 7036, 7663, 8326, 9026, 9764, 10541, 11358, 12216, 13116, 14059, 15046, 16078, 17156, 18281, 19454, 20676]

cp's OEIS Frontend

A034857 a(n) = C(n+2,3) + 2C(n,2) + 2(n-2).

Table of values

List of values

cp's OEIS Frontend

A034857 a(n) = C(n+2,3) + 2*C(n,2) + 2*(n-2).

Table of values

List of values

A034857 a(n) = C(n+2,3) + 2C(n,2) + 2(n-2).