A014112 - cp's OEIS frontend

A014112 a(n) = n(n-1) + (n-2)(n-3) + ... + 10 + 1 for n odd; otherwise, a(n) = n(n-1) + (n-2)(n-3) + ... + 21.

n	a(n)
1	1
2	2
3	7
4	14
5	27
6	44
7	69
8	100
9	141
10	190
11	251
12	322
13	407
14	504
15	617
16	744
17	889
18	1050
19	1231
20	1430
21	1651
22	1892
23	2157
24	2444
25	2757
26	3094
27	3459
28	3850
29	4271
30	4720
31	5201
32	5712
33	6257
34	6834
35	7447
36	8094
37	8779
38	9500
39	10261
40	11060
41	11901
42	12782
43	13707
44	14674
45	15687

[1, 2, 7, 14, 27, 44, 69, 100, 141, 190, 251, 322, 407, 504, 617, 744, 889, 1050, 1231, 1430, 1651, 1892, 2157, 2444, 2757, 3094, 3459, 3850, 4271, 4720, 5201, 5712, 6257, 6834, 7447, 8094, 8779, 9500, 10261, 11060, 11901, 12782, 13707, 14674, 15687]

cp's OEIS Frontend

A014112 a(n) = n(n-1) + (n-2)(n-3) + ... + 10 + 1 for n odd; otherwise, a(n) = n(n-1) + (n-2)(n-3) + ... + 21.

Table of values

List of values

cp's OEIS Frontend

A014112 a(n) = n*(n-1) + (n-2)*(n-3) + ... + 1*0 + 1 for n odd; otherwise, a(n) = n*(n-1) + (n-2)*(n-3) + ... + 2*1.

Table of values

List of values

A014112 a(n) = n(n-1) + (n-2)(n-3) + ... + 10 + 1 for n odd; otherwise, a(n) = n(n-1) + (n-2)(n-3) + ... + 21.