A258427 - cp's OEIS frontend

A258427 Number T(n,k) of redundant binary trees with n inner nodes of exactly k different dimensions used for the partition of the k-dimensional hypercube by hierarchical bisection; triangle T(n,k), n>=3, 2<=k<=n-1, read by rows.

n	a(n)
3	1
4	12
5	18
6	112
7	420
8	336
9	956
10	6816
11	12936
12	7200
13	7830
14	95579
15	324540
16	414450
17	178200
18	62744
19	1244466
20	6755720
21	14886300
22	14355000
23	5045040
24	496518
25	15537456
26	127063596
27	430572780
28	699460740
29	542341800
30	161441280

[1, 12, 18, 112, 420, 336, 956, 6816, 12936, 7200, 7830, 95579, 324540, 414450, 178200, 62744, 1244466, 6755720, 14886300, 14355000, 5045040, 496518, 15537456, 127063596, 430572780, 699460740, 542341800, 161441280]

cp's OEIS Frontend

A258427 Number T(n,k) of redundant binary trees with n inner nodes of exactly k different dimensions used for the partition of the k-dimensional hypercube by hierarchical bisection; triangle T(n,k), n>=3, 2<=k<=n-1, read by rows.

Table of values

List of values