A004982 - cp's OEIS frontend

A004982 a(n) = (2^n/n!) * Product_{k=0..n-1} (4*k + 3).

n	a(n)
0	1
1	6
2	42
3	308
4	2310
5	17556
6	134596
7	1038312
8	8046918
9	62587140
10	488179692
11	3816677592
12	29897307804
13	234578876616
14	1843119744840
15	14499208659408
16	114181268192838
17	900017055167076
18	7100134546318044
19	56053693786721400
20	442824180915099060
21	3500419715805068760
22	27685137752276452920

[1, 6, 42, 308, 2310, 17556, 134596, 1038312, 8046918, 62587140, 488179692, 3816677592, 29897307804, 234578876616, 1843119744840, 14499208659408, 114181268192838, 900017055167076, 7100134546318044, 56053693786721400, 442824180915099060, 3500419715805068760, 27685137752276452920]

cp's OEIS Frontend

A004982 a(n) = (2^n/n!) * Product_{k=0..n-1} (4*k + 3).

Table of values

List of values