A212433 - cp's OEIS frontend

A212433 Number of equivalence classes of S_n under transformations of positionally and numerically adjacent elements of the form abc <--> acb <--> bac <--> cba, where a

n	a(n)
0	1
1	1
2	2
3	3
4	13
5	71
6	470
7	3497
8	29203
9	271500
10	2786711
11	31322803
12	382794114
13	5054810585
14	71735226535
15	1088920362030
16	17607174571553
17	302143065676513
18	5484510055766118
19	104999034898520903
20	2114467256458136473
21	44682676397748896010
22	988663144904696100347

[1, 1, 2, 3, 13, 71, 470, 3497, 29203, 271500, 2786711, 31322803, 382794114, 5054810585, 71735226535, 1088920362030, 17607174571553, 302143065676513, 5484510055766118, 104999034898520903, 2114467256458136473, 44682676397748896010, 988663144904696100347]

cp's OEIS Frontend

A212433 Number of equivalence classes of S_n under transformations of positionally and numerically adjacent elements of the form abc <--> acb <--> bac <--> cba, where a

Table of values

List of values