A360292 - cp's OEIS frontend

A360292 a(n) = Sum_{k=0..floor(n/4)} binomial(n-1-3k,k) binomial(2n-8k,n-4*k).

n	a(n)
0	1
1	2
2	6
3	20
4	70
5	254
6	936
7	3492
8	13150
9	49882
10	190318
11	729576
12	2807816
13	10841962
14	41983588
15	162973568
16	633994982
17	2471010742
18	9646981054
19	37718873700
20	147676286078
21	578883674722
22	2271704404900
23	8923807316892
24	35087269756344
25	138075819924306

[1, 2, 6, 20, 70, 254, 936, 3492, 13150, 49882, 190318, 729576, 2807816, 10841962, 41983588, 162973568, 633994982, 2471010742, 9646981054, 37718873700, 147676286078, 578883674722, 2271704404900, 8923807316892, 35087269756344, 138075819924306]

cp's OEIS Frontend

A360292 a(n) = Sum_{k=0..floor(n/4)} binomial(n-1-3k,k) binomial(2n-8k,n-4*k).

Table of values

List of values

cp's OEIS Frontend

A360292 a(n) = Sum_{k=0..floor(n/4)} binomial(n-1-3*k,k) * binomial(2*n-8*k,n-4*k).

Table of values

List of values

A360292 a(n) = Sum_{k=0..floor(n/4)} binomial(n-1-3k,k) binomial(2n-8k,n-4*k).