A006918 - cp's OEIS frontend

A006918 a(n) = binomial(n+3, 3)/4 for odd n, n(n+2)(n+4)/24 for even n.

n	a(n)
0	0
1	1
2	2
3	5
4	8
5	14
6	20
7	30
8	40
9	55
10	70
11	91
12	112
13	140
14	168
15	204
16	240
17	285
18	330
19	385
20	440
21	506
22	572
23	650
24	728
25	819
26	910
27	1015
28	1120
29	1240
30	1360
31	1496
32	1632
33	1785
34	1938
35	2109
36	2280
37	2470
38	2660
39	2870
40	3080
41	3311
42	3542
43	3795
44	4048
45	4324
46	4600
47	4900
48	5200
49	5525
50	5850
51	6201
52	6552
53	6930

[0, 1, 2, 5, 8, 14, 20, 30, 40, 55, 70, 91, 112, 140, 168, 204, 240, 285, 330, 385, 440, 506, 572, 650, 728, 819, 910, 1015, 1120, 1240, 1360, 1496, 1632, 1785, 1938, 2109, 2280, 2470, 2660, 2870, 3080, 3311, 3542, 3795, 4048, 4324, 4600, 4900, 5200, 5525, 5850, 6201, 6552, 6930]

cp's OEIS Frontend

A006918 a(n) = binomial(n+3, 3)/4 for odd n, n(n+2)(n+4)/24 for even n.

Table of values

List of values

cp's OEIS Frontend

A006918 a(n) = binomial(n+3, 3)/4 for odd n, n*(n+2)*(n+4)/24 for even n.

Table of values

List of values

A006918 a(n) = binomial(n+3, 3)/4 for odd n, n(n+2)(n+4)/24 for even n.