A271937 - cp's OEIS frontend

A271937 a(n) = (7/4)n^2 + (5/2)n + (7 + (-1)^n)/8.

n	a(n)
0	1
1	5
2	13
3	24
4	39
5	57
6	79
7	104
8	133
9	165
10	201
11	240
12	283
13	329
14	379
15	432
16	489
17	549
18	613
19	680
20	751
21	825
22	903
23	984
24	1069
25	1157
26	1249
27	1344
28	1443
29	1545
30	1651
31	1760
32	1873
33	1989
34	2109
35	2232
36	2359
37	2489
38	2623
39	2760
40	2901
41	3045
42	3193
43	3344
44	3499
45	3657
46	3819
47	3984
48	4153

[1, 5, 13, 24, 39, 57, 79, 104, 133, 165, 201, 240, 283, 329, 379, 432, 489, 549, 613, 680, 751, 825, 903, 984, 1069, 1157, 1249, 1344, 1443, 1545, 1651, 1760, 1873, 1989, 2109, 2232, 2359, 2489, 2623, 2760, 2901, 3045, 3193, 3344, 3499, 3657, 3819, 3984, 4153]

cp's OEIS Frontend

A271937 a(n) = (7/4)n^2 + (5/2)n + (7 + (-1)^n)/8.

Table of values

List of values

cp's OEIS Frontend

A271937 a(n) = (7/4)*n^2 + (5/2)*n + (7 + (-1)^n)/8.

Table of values

List of values

A271937 a(n) = (7/4)n^2 + (5/2)n + (7 + (-1)^n)/8.