A166882 - cp's OEIS frontend

A166882 a(n) = coefficient of x^n in the n-th iteration of (x + x^2 + x^3) for n>=1.

n	a(n)
1	1
2	2
3	9
4	60
5	560
6	6720
7	98826
8	1722084
9	34700940
10	793894860
11	20329008975
12	576026191026
13	17893288364952
14	604630781494558
15	22079861395250568
16	866509034147074284
17	36367487433847501620
18	1625458443704631873072

[1, 2, 9, 60, 560, 6720, 98826, 1722084, 34700940, 793894860, 20329008975, 576026191026, 17893288364952, 604630781494558, 22079861395250568, 866509034147074284, 36367487433847501620, 1625458443704631873072]

cp's OEIS Frontend

A166882 a(n) = coefficient of x^n in the n-th iteration of (x + x^2 + x^3) for n>=1.

Table of values

List of values