A259550 - cp's OEIS frontend

A259550 a(n) = C(5n-1,2n)/3, n > 0, a(0) = 1.

n	a(n)
0	1
1	2
2	42
3	1001
4	25194
5	653752
6	17298645
7	463991880
8	12570420330
9	343176898988
10	9425842448792
11	260170725132045
12	7210477496434485
13	200519284375732896
14	5592628786362932776
15	156375886125188595376
16	4382048530314336892010
17	123033460966787345446836

[1, 2, 42, 1001, 25194, 653752, 17298645, 463991880, 12570420330, 343176898988, 9425842448792, 260170725132045, 7210477496434485, 200519284375732896, 5592628786362932776, 156375886125188595376, 4382048530314336892010, 123033460966787345446836]

cp's OEIS Frontend

A259550 a(n) = C(5n-1,2n)/3, n > 0, a(0) = 1.

Table of values

List of values

cp's OEIS Frontend

A259550 a(n) = C(5*n-1,2*n)/3, n > 0, a(0) = 1.

Table of values

List of values

A259550 a(n) = C(5n-1,2n)/3, n > 0, a(0) = 1.