A305605 - cp's OEIS frontend

A305605 G.f. A(x) satisfies: [x^k] A(x) / (1-x)^n = 0 for k = n(n+1)/2 + 1 through k = (n+1)(n+2)/2 for n >= 0.

n	a(n)
0	1
1	0
2	-1
3	0
4	-2
5	2
6	0
7	-7
8	14
9	-7
10	0
11	-37
12	111
13	-111
14	37
15	0
16	-268
17	1072
18	-1608
19	1072
20	-268
21	0
22	-2496
23	12480
24	-24960
25	24960
26	-12480
27	2496
28	0
29	-28612
30	171672
31	-429180
32	572240
33	-429180
34	171672
35	-28612
36	0
37	-391189
38	2738323
39	-8214969
40	13691615
41	-13691615
42	8214969
43	-2738323
44	391189
45	0
46	-6230646
47	49845168
48	-174458088
49	348916176
50	-436145220
51	348916176
52	-174458088
53	49845168
54	-6230646
55	0

[1, 0, -1, 0, -2, 2, 0, -7, 14, -7, 0, -37, 111, -111, 37, 0, -268, 1072, -1608, 1072, -268, 0, -2496, 12480, -24960, 24960, -12480, 2496, 0, -28612, 171672, -429180, 572240, -429180, 171672, -28612, 0, -391189, 2738323, -8214969, 13691615, -13691615, 8214969, -2738323, 391189, 0, -6230646, 49845168, -174458088, 348916176, -436145220, 348916176, -174458088, 49845168, -6230646, 0]

cp's OEIS Frontend

A305605 G.f. A(x) satisfies: [x^k] A(x) / (1-x)^n = 0 for k = n(n+1)/2 + 1 through k = (n+1)(n+2)/2 for n >= 0.

Table of values

List of values

cp's OEIS Frontend

A305605 G.f. A(x) satisfies: [x^k] A(x) / (1-x)^n = 0 for k = n*(n+1)/2 + 1 through k = (n+1)*(n+2)/2 for n >= 0.

Table of values

List of values

A305605 G.f. A(x) satisfies: [x^k] A(x) / (1-x)^n = 0 for k = n(n+1)/2 + 1 through k = (n+1)(n+2)/2 for n >= 0.