A134659 - cp's OEIS frontend

A134659 Total number of odd coefficients in (1+x+x^2)^k for k=0,...,n.

n	a(n)
0	1
1	4
2	7
3	12
4	15
5	24
6	29
7	40
8	43
9	52
10	61
11	76
12	81
13	96
14	107
15	128
16	131
17	140
18	149
19	164
20	173
21	200
22	215
23	248
24	253
25	268
26	283
27	308
28	319
29	352
30	373
31	416
32	419
33	428
34	437
35	452
36	461
37	488
38	503
39	536
40	545
41	572
42	599
43	644
44	659
45	704
46	737
47	800
48	805
49	820
50	835
51	860
52	875
53	920
54	945
55	1000

[1, 4, 7, 12, 15, 24, 29, 40, 43, 52, 61, 76, 81, 96, 107, 128, 131, 140, 149, 164, 173, 200, 215, 248, 253, 268, 283, 308, 319, 352, 373, 416, 419, 428, 437, 452, 461, 488, 503, 536, 545, 572, 599, 644, 659, 704, 737, 800, 805, 820, 835, 860, 875, 920, 945, 1000]

cp's OEIS Frontend

A134659 Total number of odd coefficients in (1+x+x^2)^k for k=0,...,n.

Table of values

List of values