A006504 - cp's OEIS frontend

A006504 Coefficient of x^4 in (1-x-x^2)^(-n).

n	a(n)
1	5
2	20
3	51
4	105
5	190
6	315
7	490
8	726
9	1035
10	1430
11	1925
12	2535
13	3276
14	4165
15	5220
16	6460
17	7905
18	9576
19	11495
20	13685
21	16170
22	18975
23	22126
24	25650
25	29575
26	33930
27	38745
28	44051
29	49880
30	56265
31	63240
32	70840
33	79101
34	88060
35	97755
36	108225
37	119510
38	131651
39	144690
40	158670

[5, 20, 51, 105, 190, 315, 490, 726, 1035, 1430, 1925, 2535, 3276, 4165, 5220, 6460, 7905, 9576, 11495, 13685, 16170, 18975, 22126, 25650, 29575, 33930, 38745, 44051, 49880, 56265, 63240, 70840, 79101, 88060, 97755, 108225, 119510, 131651, 144690, 158670]

cp's OEIS Frontend

A006504 Coefficient of x^4 in (1-x-x^2)^(-n).

Table of values

List of values