A353091 - cp's OEIS frontend

A353091 Irregular triangle read by rows: T(n, k) is the number of n-step closed walks on the hexagonal lattice having algebraic area k.

n	a(n)
0	1
1	6
2	0
3	6
4	66
5	0
6	12
7	0
8	150
9	0
10	30
11	1020
12	0
13	420
14	0
15	84
16	0
17	6
18	0
19	3444
20	0
21	1302
22	0
23	252
24	0
25	42
26	19890
27	0
28	11952
29	0
30	4284
31	0
32	984
33	0
34	216
35	0
36	24
37	0
38	82062
39	0
40	42972
41	0
42	14814
43	0
44	4248
45	0
46	990
47	0
48	216
49	0
50	18
51	449976
52	0
53	327420
54	0
55	158970
56	0
57	57180
58	0
59	18780
60	0
61	5190
62	0
63	1350
64	0
65	270
66	0
67	30

[1, 6, 0, 6, 66, 0, 12, 0, 150, 0, 30, 1020, 0, 420, 0, 84, 0, 6, 0, 3444, 0, 1302, 0, 252, 0, 42, 19890, 0, 11952, 0, 4284, 0, 984, 0, 216, 0, 24, 0, 82062, 0, 42972, 0, 14814, 0, 4248, 0, 990, 0, 216, 0, 18, 449976, 0, 327420, 0, 158970, 0, 57180, 0, 18780, 0, 5190, 0, 1350, 0, 270, 0, 30]

cp's OEIS Frontend

A353091 Irregular triangle read by rows: T(n, k) is the number of n-step closed walks on the hexagonal lattice having algebraic area k.

Table of values

List of values