A122827 - cp's OEIS frontend

A122827 Number of independent generators of degree n of the algebra of Free quasi-symmetric functions (or Malvenuto-Reutenauer algebra of permutations) as a dendriform dialgebra (i.e., number of totally primitive elements).

n	a(n)
1	1
2	0
3	1
4	6
5	39
6	284
7	2305
8	20682
9	203651
10	2186744
11	25463925
12	319989030
13	4320183527
14	62412737460
15	961264517369
16	15730347890082
17	272650924761195
18	4991218317261808
19	96248879172426557
20	1950405560049871134
21	41440841509597888495
22	921333064567137032620
23	21392807067461981820417

[1, 0, 1, 6, 39, 284, 2305, 20682, 203651, 2186744, 25463925, 319989030, 4320183527, 62412737460, 961264517369, 15730347890082, 272650924761195, 4991218317261808, 96248879172426557, 1950405560049871134, 41440841509597888495, 921333064567137032620, 21392807067461981820417]

cp's OEIS Frontend

A122827 Number of independent generators of degree n of the algebra of Free quasi-symmetric functions (or Malvenuto-Reutenauer algebra of permutations) as a dendriform dialgebra (i.e., number of totally primitive elements).

Table of values

List of values