A024397 - cp's OEIS frontend

A024397 a(n) = s(1)s(2)...s(n+1)(1/s(2) - 1/s(3) + ... + c/s(n+1)), where c = (-1)^(n+1) and s(k) = 3k-1 for k = 1,2,3,...

n	a(n)
1	2
2	6
3	146
4	1164
5	32108
6	432720
7	14141360
8	271332960
9	10373558240
10	259311694080
11	11400458720000
12	351858201408000
13	17517836995904000
14	644027147554560000
15	35846613866733824000
16	1530195810548224512000
17	94207122098479233536000
18	4580941398125400354816000

[2, 6, 146, 1164, 32108, 432720, 14141360, 271332960, 10373558240, 259311694080, 11400458720000, 351858201408000, 17517836995904000, 644027147554560000, 35846613866733824000, 1530195810548224512000, 94207122098479233536000, 4580941398125400354816000]

cp's OEIS Frontend

A024397 a(n) = s(1)s(2)...s(n+1)(1/s(2) - 1/s(3) + ... + c/s(n+1)), where c = (-1)^(n+1) and s(k) = 3k-1 for k = 1,2,3,...

Table of values

List of values

cp's OEIS Frontend

A024397 a(n) = s(1)*s(2)*...*s(n+1)*(1/s(2) - 1/s(3) + ... + c/s(n+1)), where c = (-1)^(n+1) and s(k) = 3k-1 for k = 1,2,3,...

Table of values

List of values

A024397 a(n) = s(1)s(2)...s(n+1)(1/s(2) - 1/s(3) + ... + c/s(n+1)), where c = (-1)^(n+1) and s(k) = 3k-1 for k = 1,2,3,...