A188678 - cp's OEIS frontend

A188678 Alternate partial sums of binomial(3n,n)/(2n+1).

n	a(n)
0	1
1	0
2	3
3	9
4	46
5	227
6	1201
7	6551
8	36712
9	209963
10	1220752
11	7193888
12	42873220
13	257957352
14	1564809168
15	9559946496
16	58768808463
17	363261736872
18	2256369305793
19	14076552984507
20	88163556913188
21	554148894304557
22	3494365949734563

[1, 0, 3, 9, 46, 227, 1201, 6551, 36712, 209963, 1220752, 7193888, 42873220, 257957352, 1564809168, 9559946496, 58768808463, 363261736872, 2256369305793, 14076552984507, 88163556913188, 554148894304557, 3494365949734563]

cp's OEIS Frontend

A188678 Alternate partial sums of binomial(3n,n)/(2n+1).

Table of values

List of values

cp's OEIS Frontend

A188678 Alternate partial sums of binomial(3*n,n)/(2*n+1).

Table of values

List of values

A188678 Alternate partial sums of binomial(3n,n)/(2n+1).