A332752 - cp's OEIS frontend

A332752 The number of permutations of {1,1,1,1,2,2,2,2,...,n,n,n,n} such that each quadruple of k's (k=1..n) is equally spaced with b(k) other elements in between, and b(1) >= b(2) >= ... >= b(n).

n	a(n)
0	1
1	1
2	4
3	16
4	110
5	544
6	5444
7	32520
8	385776
9	3282108
10	40916528
11	354328560
12	7200045216
13	67347823160
14	1182323197504
15	18086875471594
16	358787259407482
17	4564034487662420

[1, 1, 4, 16, 110, 544, 5444, 32520, 385776, 3282108, 40916528, 354328560, 7200045216, 67347823160, 1182323197504, 18086875471594, 358787259407482, 4564034487662420]

cp's OEIS Frontend

A332752 The number of permutations of {1,1,1,1,2,2,2,2,...,n,n,n,n} such that each quadruple of k's (k=1..n) is equally spaced with b(k) other elements in between, and b(1) >= b(2) >= ... >= b(n).

Table of values

List of values