A058094 - cp's OEIS frontend

A058094 Number of 321-hexagon-avoiding permutations in S_n, i.e., permutations of 1..n with no submatrix equivalent to 321, 56781234, 46781235, 56718234 or 46718235.

n	a(n)
0	1
1	1
2	2
3	5
4	14
5	42
6	132
7	429
8	1426
9	4806
10	16329
11	55740
12	190787
13	654044
14	2244153
15	7704047
16	26455216
17	90860572
18	312090478
19	1072034764
20	3682565575
21	12650266243
22	43456340025
23	149282561256
24	512821712570
25	1761669869321
26	6051779569463
27	20789398928496
28	71416886375493

[1, 1, 2, 5, 14, 42, 132, 429, 1426, 4806, 16329, 55740, 190787, 654044, 2244153, 7704047, 26455216, 90860572, 312090478, 1072034764, 3682565575, 12650266243, 43456340025, 149282561256, 512821712570, 1761669869321, 6051779569463, 20789398928496, 71416886375493]

cp's OEIS Frontend

A058094 Number of 321-hexagon-avoiding permutations in S_n, i.e., permutations of 1..n with no submatrix equivalent to 321, 56781234, 46781235, 56718234 or 46718235.

Table of values

List of values