A371659 - cp's OEIS frontend

A371659 Triangle read by rows: T(n,k) is the number of planar tanglegrams of size n with irreducible component of size k.

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	3
9	3
10	5
11	0
12	13
13	9
14	20
15	34
16	0
17	90
18	46
19	70
20	170
21	273
22	0
23	747
24	312
25	360
26	680
27	1638
28	2436
29	0
30	7040
31	2580
32	2435
33	3570
34	7371
35	17052
36	23391
37	0
38	71736
39	24056
40	19800
41	23970
42	39858
43	85260
44	187128
45	237090
46	0
47	774738
48	243483
49	182850
50	193664
51	267813
52	477456
53	1029204
54	2133810
55	2505228

[1, 0, 1, 0, 1, 1, 0, 3, 3, 5, 0, 13, 9, 20, 34, 0, 90, 46, 70, 170, 273, 0, 747, 312, 360, 680, 1638, 2436, 0, 7040, 2580, 2435, 3570, 7371, 17052, 23391, 0, 71736, 24056, 19800, 23970, 39858, 85260, 187128, 237090, 0, 774738, 243483, 182850, 193664, 267813, 477456, 1029204, 2133810, 2505228]

cp's OEIS Frontend

A371659 Triangle read by rows: T(n,k) is the number of planar tanglegrams of size n with irreducible component of size k.

Table of values

List of values