A377146 - cp's OEIS frontend

A377146 a(n) = Sum_{k=0..floor(n/2)} binomial(k+2,2) * binomial(k,n-2*k)^2.

n	a(n)
0	1
1	0
2	3
3	3
4	6
5	24
6	16
7	90
8	105
9	250
10	561
11	765
12	2143
13	3108
14	6861
15	12985
16	22221
17	47988
18	79463
19	161451
20	293610
21	535836
22	1042188
23	1835898
24	3534766
25	6399198
26	11805756
27	22021232
28	39718497
29	74193924
30	134489713
31	247165839
32	453235266
33	822748406
34	1512078192
35	2741606052

[1, 0, 3, 3, 6, 24, 16, 90, 105, 250, 561, 765, 2143, 3108, 6861, 12985, 22221, 47988, 79463, 161451, 293610, 535836, 1042188, 1835898, 3534766, 6399198, 11805756, 22021232, 39718497, 74193924, 134489713, 247165839, 453235266, 822748406, 1512078192, 2741606052]

cp's OEIS Frontend

A377146 a(n) = Sum_{k=0..floor(n/2)} binomial(k+2,2) * binomial(k,n-2*k)^2.

Table of values

List of values