A221862 - cp's OEIS frontend

A221862 Expansion of (1-3x+x^2)(1-x)/(1-9x+28x^2-35x^3+15x^4-x^5).

n	a(n)
0	1
1	5
2	21
3	83
4	319
5	1208
6	4535
7	16932
8	62986
9	233702
10	865513
11	3201026
12	11826582
13	43660921
14	161090910
15	594092895
16	2190225106
17	8072519511
18	29746921227
19	109599320930
20	403758993204
21	1487294628182
22	5478244777582
23	20177275278559
24	74313150143975
25	273687550281967

[1, 5, 21, 83, 319, 1208, 4535, 16932, 62986, 233702, 865513, 3201026, 11826582, 43660921, 161090910, 594092895, 2190225106, 8072519511, 29746921227, 109599320930, 403758993204, 1487294628182, 5478244777582, 20177275278559, 74313150143975, 273687550281967]

cp's OEIS Frontend

A221862 Expansion of (1-3x+x^2)(1-x)/(1-9x+28x^2-35x^3+15x^4-x^5).

Table of values

List of values

cp's OEIS Frontend

A221862 Expansion of (1-3*x+x^2)*(1-x)/(1-9*x+28*x^2-35*x^3+15*x^4-x^5).

Table of values

List of values

A221862 Expansion of (1-3x+x^2)(1-x)/(1-9x+28x^2-35x^3+15x^4-x^5).