A157870 - cp's OEIS frontend

A157870 a(n) = (4n+1)(4n+2) = (4n+2)!/(4*n)!.

n	a(n)
0	2
1	30
2	90
3	182
4	306
5	462
6	650
7	870
8	1122
9	1406
10	1722
11	2070
12	2450
13	2862
14	3306
15	3782
16	4290
17	4830
18	5402
19	6006
20	6642
21	7310
22	8010
23	8742
24	9506
25	10302
26	11130
27	11990
28	12882
29	13806
30	14762
31	15750
32	16770
33	17822
34	18906
35	20022
36	21170
37	22350
38	23562
39	24806
40	26082
41	27390
42	28730
43	30102
44	31506
45	32942

[2, 30, 90, 182, 306, 462, 650, 870, 1122, 1406, 1722, 2070, 2450, 2862, 3306, 3782, 4290, 4830, 5402, 6006, 6642, 7310, 8010, 8742, 9506, 10302, 11130, 11990, 12882, 13806, 14762, 15750, 16770, 17822, 18906, 20022, 21170, 22350, 23562, 24806, 26082, 27390, 28730, 30102, 31506, 32942]

cp's OEIS Frontend

A157870 a(n) = (4n+1)(4n+2) = (4n+2)!/(4*n)!.

Table of values

List of values

cp's OEIS Frontend

A157870 a(n) = (4*n+1)*(4*n+2) = (4*n+2)!/(4*n)!.

Table of values

List of values

A157870 a(n) = (4n+1)(4n+2) = (4n+2)!/(4*n)!.