A227047 - cp's OEIS frontend

A227047 Expansion of x^2(1+x^2) / ( (x^2-x+1)(-x^2-x+1)*(1+x+x^2) ).

n	a(n)
0	0
1	0
2	1
3	1
4	2
5	3
6	4
7	7
8	12
9	19
10	31
11	50
12	80
13	130
14	211
15	341
16	552
17	893
18	1444
19	2337
20	3782
21	6119
22	9901
23	16020
24	25920
25	41940
26	67861
27	109801
28	177662
29	287463
30	465124
31	752587
32	1217712
33	1970299
34	3188011
35	5158310
36	8346320
37	13504630
38	21850951
39	35355581
40	57206532
41	92562113
42	149768644

[0, 0, 1, 1, 2, 3, 4, 7, 12, 19, 31, 50, 80, 130, 211, 341, 552, 893, 1444, 2337, 3782, 6119, 9901, 16020, 25920, 41940, 67861, 109801, 177662, 287463, 465124, 752587, 1217712, 1970299, 3188011, 5158310, 8346320, 13504630, 21850951, 35355581, 57206532, 92562113, 149768644]

cp's OEIS Frontend

A227047 Expansion of x^2(1+x^2) / ( (x^2-x+1)(-x^2-x+1)*(1+x+x^2) ).

Table of values

List of values

cp's OEIS Frontend

A227047 Expansion of x^2*(1+x^2) / ( (x^2-x+1)*(-x^2-x+1)*(1+x+x^2) ).

Table of values

List of values

A227047 Expansion of x^2(1+x^2) / ( (x^2-x+1)(-x^2-x+1)*(1+x+x^2) ).