A385672 - cp's OEIS frontend

A385672 Irregular triangle read by rows: T(n, k) is the number of n-step walks on the square lattice having algebraic area k; n >= 0, 0 <= k <= floor(n^2/4).

n	a(n)
0	1
1	4
2	12
3	2
4	40
5	8
6	4
7	124
8	42
9	16
10	6
11	2
12	416
13	160
14	92
15	28
16	16
17	4
18	4
19	1348
20	678
21	362
22	174
23	88
24	34
25	22
26	8
27	6
28	2
29	4624
30	2548
31	1624
32	756
33	460
34	200
35	156
36	56
37	40
38	20
39	12
40	4
41	4
42	15632
43	10062
44	6336
45	3586
46	2110
47	1106
48	742
49	388
50	278
51	152
52	82
53	46
54	34
55	14
56	8
57	6
58	2

[1, 4, 12, 2, 40, 8, 4, 124, 42, 16, 6, 2, 416, 160, 92, 28, 16, 4, 4, 1348, 678, 362, 174, 88, 34, 22, 8, 6, 2, 4624, 2548, 1624, 756, 460, 200, 156, 56, 40, 20, 12, 4, 4, 15632, 10062, 6336, 3586, 2110, 1106, 742, 388, 278, 152, 82, 46, 34, 14, 8, 6, 2]

cp's OEIS Frontend

A385672 Irregular triangle read by rows: T(n, k) is the number of n-step walks on the square lattice having algebraic area k; n >= 0, 0 <= k <= floor(n^2/4).

Table of values

List of values