A218137 - cp's OEIS frontend

A218137 Sum of absolute values of real and imaginary parts of the coefficients in the expansion of 1 / (1 - x - I*x^2), where I^2=-1.

n	a(n)
0	1
1	1
2	2
3	3
4	3
5	6
6	9
7	11
8	16
9	27
10	37
11	40
12	77
13	117
14	144
15	207
16	351
17	482
18	523
19	999
20	1522
21	1879
22	2681
23	4560
24	6279
25	6839
26	12960
27	19799
28	24517
29	34722
30	59239
31	81793
32	89424
33	168123
34	257547
35	319880
36	449667
37	769547
38	1065430
39	1169193
40	2180881
41	3350074
42	4173363
43	5823117
44	9996480

[1, 1, 2, 3, 3, 6, 9, 11, 16, 27, 37, 40, 77, 117, 144, 207, 351, 482, 523, 999, 1522, 1879, 2681, 4560, 6279, 6839, 12960, 19799, 24517, 34722, 59239, 81793, 89424, 168123, 257547, 319880, 449667, 769547, 1065430, 1169193, 2180881, 3350074, 4173363, 5823117, 9996480]

cp's OEIS Frontend

A218137 Sum of absolute values of real and imaginary parts of the coefficients in the expansion of 1 / (1 - x - I*x^2), where I^2=-1.

Table of values

List of values