A304487 - cp's OEIS frontend

A304487 a(n) = (3 + 2n - 3n^2 + 4n^3 - 3((-1 + n) mod 2))/6.

n	a(n)
1	1
2	4
3	15
4	36
5	73
6	128
7	207
8	312
9	449
10	620
11	831
12	1084
13	1385
14	1736
15	2143
16	2608
17	3137
18	3732
19	4399
20	5140
21	5961
22	6864
23	7855
24	8936
25	10113
26	11388
27	12767
28	14252
29	15849
30	17560
31	19391
32	21344
33	23425
34	25636
35	27983
36	30468
37	33097
38	35872
39	38799
40	41880
41	45121
42	48524
43	52095

[1, 4, 15, 36, 73, 128, 207, 312, 449, 620, 831, 1084, 1385, 1736, 2143, 2608, 3137, 3732, 4399, 5140, 5961, 6864, 7855, 8936, 10113, 11388, 12767, 14252, 15849, 17560, 19391, 21344, 23425, 25636, 27983, 30468, 33097, 35872, 38799, 41880, 45121, 48524, 52095]

cp's OEIS Frontend

A304487 a(n) = (3 + 2n - 3n^2 + 4n^3 - 3((-1 + n) mod 2))/6.

Table of values

List of values

cp's OEIS Frontend

A304487 a(n) = (3 + 2*n - 3*n^2 + 4*n^3 - 3*((-1 + n) mod 2))/6.

Table of values

List of values

A304487 a(n) = (3 + 2n - 3n^2 + 4n^3 - 3((-1 + n) mod 2))/6.