A173009 - cp's OEIS frontend

A173009 Expansion of o.g.f. x(1 - x + x^2)/(1 -3x +x^2 +3x^3 -2x^4).

n	a(n)
1	0
2	1
3	2
4	6
5	13
6	29
7	60
8	124
9	251
10	507
11	1018
12	2042
13	4089
14	8185
15	16376
16	32760
17	65527
18	131063
19	262134
20	524278
21	1048565
22	2097141
23	4194292
24	8388596
25	16777203
26	33554419
27	67108850
28	134217714
29	268435441
30	536870897

[0, 1, 2, 6, 13, 29, 60, 124, 251, 507, 1018, 2042, 4089, 8185, 16376, 32760, 65527, 131063, 262134, 524278, 1048565, 2097141, 4194292, 8388596, 16777203, 33554419, 67108850, 134217714, 268435441, 536870897]

cp's OEIS Frontend

A173009 Expansion of o.g.f. x(1 - x + x^2)/(1 -3x +x^2 +3x^3 -2x^4).

Table of values

List of values

cp's OEIS Frontend

A173009 Expansion of o.g.f. x*(1 - x + x^2)/(1 -3*x +x^2 +3*x^3 -2*x^4).

Table of values

List of values

A173009 Expansion of o.g.f. x(1 - x + x^2)/(1 -3x +x^2 +3x^3 -2x^4).