A345970 - cp's OEIS frontend

A345970 Irregular triangle T(n,k) read by rows in which n-th row lists in colex order all series-reduced tree degree sequences D of n nodes encoded as t = Product_{d in D} prime(d); n >= 4, 1 <= k <= A002865(n-2).

n	a(n)
4	40
5	112
6	352
7	400
8	832
9	1120
10	2176
11	3520
12	3136
13	4000
14	4864
15	8320
16	9856
17	11200
18	11776
19	21760
20	23296
21	30976
22	35200
23	31360
24	40000
25	29696
26	48640
27	60928
28	73216
29	83200
30	98560
31	87808
32	112000
33	63488
34	117760
35	136192
36	191488
37	173056
38	217600
39	232960
40	309760
41	275968
42	352000
43	313600
44	400000

[40, 112, 352, 400, 832, 1120, 2176, 3520, 3136, 4000, 4864, 8320, 9856, 11200, 11776, 21760, 23296, 30976, 35200, 31360, 40000, 29696, 48640, 60928, 73216, 83200, 98560, 87808, 112000, 63488, 117760, 136192, 191488, 173056, 217600, 232960, 309760, 275968, 352000, 313600, 400000]

cp's OEIS Frontend

A345970 Irregular triangle T(n,k) read by rows in which n-th row lists in colex order all series-reduced tree degree sequences D of n nodes encoded as t = Product_{d in D} prime(d); n >= 4, 1 <= k <= A002865(n-2).

Table of values

List of values