A385388 - cp's OEIS frontend

A385388 Irregular triangle read by rows: T(n,k) is the number of polysticks of size k, i.e., connected subsets of k edges, of the n X n flat torus, up to cyclic shifts and reflections of rows and columns; 1 <= k <= 2*n^2.

n	a(n)
1	2
2	1
3	2
4	3
5	6
6	11
7	8
8	7
9	2
10	1
11	2
12	3
13	10
14	24
15	76
16	213
17	522
18	982
19	1308
20	1274
21	972
22	593
23	288
24	114
25	38
26	10
27	2
28	1
29	2
30	3
31	10
32	28
33	104
34	387
35	1518
36	5799
37	21336
38	73400
39	230462
40	644155
41	1556484
42	3151899
43	5183442
44	6823550
45	7342196
46	6639409
47	5131834
48	3433229
49	1992710
50	1007190
51	440148
52	166572
53	53566
54	14806
55	3356
56	682
57	104
58	20
59	2
60	1

[2, 1, 2, 3, 6, 11, 8, 7, 2, 1, 2, 3, 10, 24, 76, 213, 522, 982, 1308, 1274, 972, 593, 288, 114, 38, 10, 2, 1, 2, 3, 10, 28, 104, 387, 1518, 5799, 21336, 73400, 230462, 644155, 1556484, 3151899, 5183442, 6823550, 7342196, 6639409, 5131834, 3433229, 1992710, 1007190, 440148, 166572, 53566, 14806, 3356, 682, 104, 20, 2, 1]

cp's OEIS Frontend

A385388 Irregular triangle read by rows: T(n,k) is the number of polysticks of size k, i.e., connected subsets of k edges, of the n X n flat torus, up to cyclic shifts and reflections of rows and columns; 1 <= k <= 2*n^2.

Table of values

List of values