A121458 - cp's OEIS frontend

A121458 Expansion of (1+x-2x^2)/(1-21x^2-7*x^3).

n	a(n)
0	1
1	1
2	19
3	28
4	406
5	721
6	8722
7	17983
8	188209
9	438697
10	4078270
11	10530100
12	88714549
13	249679990
14	1936716229
15	5864281633
16	42418800739
17	136706927896
18	931844786950
19	3167777090989
20	20525689021222
21	73046232419419
22	453213909082585

[1, 1, 19, 28, 406, 721, 8722, 17983, 188209, 438697, 4078270, 10530100, 88714549, 249679990, 1936716229, 5864281633, 42418800739, 136706927896, 931844786950, 3167777090989, 20525689021222, 73046232419419, 453213909082585]

cp's OEIS Frontend

A121458 Expansion of (1+x-2x^2)/(1-21x^2-7*x^3).

Table of values

List of values

cp's OEIS Frontend

A121458 Expansion of (1+x-2*x^2)/(1-21*x^2-7*x^3).

Table of values

List of values

A121458 Expansion of (1+x-2x^2)/(1-21x^2-7*x^3).