A221949 - cp's OEIS frontend

A221949 Expansion of (-x+2x^2-x^3-x^4-2x^5)/(-1+3x-2x^2-x^4+x^5).

n	a(n)
0	0
1	1
2	1
3	2
4	5
5	12
6	26
7	53
8	104
9	199
10	375
11	700
12	1299
13	2402
14	4432
15	8167
16	15038
17	27677
18	50925
19	93686
20	172337
21	317000
22	583078
23	1072473
24	1972612
25	3628227
26	6673379
27	12274288
28	22575967
29	41523710
30	76374044
31	140473803
32	258371642
33	475219577
34	874065113
35	1607656426
36	2956941213
37	5438662852
38	10003260594
39	18398864765
40	33840788320
41	62242913791
42	114482566991

[0, 1, 1, 2, 5, 12, 26, 53, 104, 199, 375, 700, 1299, 2402, 4432, 8167, 15038, 27677, 50925, 93686, 172337, 317000, 583078, 1072473, 1972612, 3628227, 6673379, 12274288, 22575967, 41523710, 76374044, 140473803, 258371642, 475219577, 874065113, 1607656426, 2956941213, 5438662852, 10003260594, 18398864765, 33840788320, 62242913791, 114482566991]

cp's OEIS Frontend

A221949 Expansion of (-x+2x^2-x^3-x^4-2x^5)/(-1+3x-2x^2-x^4+x^5).

Table of values

List of values

cp's OEIS Frontend

A221949 Expansion of (-x+2*x^2-x^3-x^4-2*x^5)/(-1+3*x-2*x^2-x^4+x^5).

Table of values

List of values

A221949 Expansion of (-x+2x^2-x^3-x^4-2x^5)/(-1+3x-2x^2-x^4+x^5).