A382230 - cp's OEIS frontend

A382230 a(n) = Sum_{k=0..n} binomial(k+2,2) * binomial(2k,2n-2*k).

n	a(n)
0	1
1	3
2	9
3	46
4	171
5	591
6	2033
7	6714
8	21606
9	68308
10	212370
11	651234
12	1974113
13	5924277
14	17623671
15	52025858
16	152539077
17	444530073
18	1288396257
19	3715833732
20	10668907932
21	30507914696
22	86912853588
23	246755125332
24	698353551105
25	1970673504951
26	5545952371509
27	15568330002486

[1, 3, 9, 46, 171, 591, 2033, 6714, 21606, 68308, 212370, 651234, 1974113, 5924277, 17623671, 52025858, 152539077, 444530073, 1288396257, 3715833732, 10668907932, 30507914696, 86912853588, 246755125332, 698353551105, 1970673504951, 5545952371509, 15568330002486]

cp's OEIS Frontend

A382230 a(n) = Sum_{k=0..n} binomial(k+2,2) * binomial(2k,2n-2*k).

Table of values

List of values

cp's OEIS Frontend

A382230 a(n) = Sum_{k=0..n} binomial(k+2,2) * binomial(2*k,2*n-2*k).

Table of values

List of values

A382230 a(n) = Sum_{k=0..n} binomial(k+2,2) * binomial(2k,2n-2*k).