A247507 - cp's OEIS frontend

A247507 Square array read by ascending antidiagonals, n>=0, k>=0. Row n is the expansion of (1-nx-sqrt(n^2x^2-2nx-4x+1))/(2x).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	6
9	5
10	1
11	4
12	12
13	22
14	14
15	1
16	5
17	20
18	57
19	90
20	42
21	1
22	6
23	30
24	116
25	300
26	394
27	132
28	1
29	7
30	42
31	205
32	740
33	1686
34	1806
35	429
36	1
37	8
38	56
39	330
40	1530
41	5028
42	9912
43	8558
44	1430
45	1
46	9
47	72
48	497
49	2814
50	12130
51	35700
52	60213
53	41586
54	4862

[1, 1, 1, 1, 2, 2, 1, 3, 6, 5, 1, 4, 12, 22, 14, 1, 5, 20, 57, 90, 42, 1, 6, 30, 116, 300, 394, 132, 1, 7, 42, 205, 740, 1686, 1806, 429, 1, 8, 56, 330, 1530, 5028, 9912, 8558, 1430, 1, 9, 72, 497, 2814, 12130, 35700, 60213, 41586, 4862]

cp's OEIS Frontend

A247507 Square array read by ascending antidiagonals, n>=0, k>=0. Row n is the expansion of (1-nx-sqrt(n^2x^2-2nx-4x+1))/(2x).

Table of values

List of values

cp's OEIS Frontend

A247507 Square array read by ascending antidiagonals, n>=0, k>=0. Row n is the expansion of (1-n*x-sqrt(n^2*x^2-2*n*x-4*x+1))/(2*x).

Table of values

List of values

A247507 Square array read by ascending antidiagonals, n>=0, k>=0. Row n is the expansion of (1-nx-sqrt(n^2x^2-2nx-4x+1))/(2x).