A338145 - cp's OEIS frontend

A338145 Triangle read by rows: T(n,k) is the number of achiral colorings of the edges of a regular n-D orthotope (or ridges of a regular n-D orthoplex) using exactly k colors. Row n has n*2^(n-1) columns.

n	a(n)
1	1
2	1
3	4
4	3
5	0
6	1
7	68
8	1200
9	7268
10	20025
11	27750
12	18900
13	5040
14	0
15	0
16	0
17	0
18	1
19	93022
20	293878020
21	90807857080
22	7503022894800
23	258528829444320
24	4681671089961600
25	50981530073846400
26	363246007692204000

[1, 1, 4, 3, 0, 1, 68, 1200, 7268, 20025, 27750, 18900, 5040, 0, 0, 0, 0, 1, 93022, 293878020, 90807857080, 7503022894800, 258528829444320, 4681671089961600, 50981530073846400, 363246007692204000]

cp's OEIS Frontend

A338145 Triangle read by rows: T(n,k) is the number of achiral colorings of the edges of a regular n-D orthotope (or ridges of a regular n-D orthoplex) using exactly k colors. Row n has n*2^(n-1) columns.

Table of values

List of values