A323850 - cp's OEIS frontend

A323850 Irregular triangle read by rows: T(n,k) (n>=2, 0<=k<=n) = total number of unbranched k-catapolyheptagons with k pentagons and n-k heptagons.

n	a(n)
2	1
3	1
4	1
5	2
6	3
7	3
8	1
9	6
10	12
11	16
12	6
13	2
14	20
15	58
16	82
17	53
18	18
19	3
20	72
21	256
22	432
23	352
24	174
25	40
26	6
27	272
28	1160
29	2208
30	2256
31	1380
32	498
33	100
34	10
35	1056
36	5120
37	11088
38	13312
39	9992
40	4672
41	1388
42	224
43	20
44	4160
45	22560
46	54432
47	75344
48	66448
49	38600
50	14840
51	3644
52	520
53	36
54	16512
55	98304
56	262528
57	409600
58	416192
59	286720
60	136448
61	44032
62	9352
63	1152
64	72

[1, 1, 1, 2, 3, 3, 1, 6, 12, 16, 6, 2, 20, 58, 82, 53, 18, 3, 72, 256, 432, 352, 174, 40, 6, 272, 1160, 2208, 2256, 1380, 498, 100, 10, 1056, 5120, 11088, 13312, 9992, 4672, 1388, 224, 20, 4160, 22560, 54432, 75344, 66448, 38600, 14840, 3644, 520, 36, 16512, 98304, 262528, 409600, 416192, 286720, 136448, 44032, 9352, 1152, 72]

cp's OEIS Frontend

A323850 Irregular triangle read by rows: T(n,k) (n>=2, 0<=k<=n) = total number of unbranched k-catapolyheptagons with k pentagons and n-k heptagons.

Table of values

List of values