A087433 - cp's OEIS frontend

A087433 Expansion of g.f.: (1-2x)(1-4x+x^2)/((1-x)(1-3x)(1-4*x)).

n	a(n)
0	1
1	2
2	6
3	20
4	70
5	252
6	926
7	3460
8	13110
9	50252
10	194446
11	758100
12	2973350
13	11716252
14	46333566
15	183739940
16	730176790
17	2906358252
18	11582386286
19	46200404980
20	184414199430
21	736494536252
22	2942491360606
23	11759505089220
24	47006639297270

[1, 2, 6, 20, 70, 252, 926, 3460, 13110, 50252, 194446, 758100, 2973350, 11716252, 46333566, 183739940, 730176790, 2906358252, 11582386286, 46200404980, 184414199430, 736494536252, 2942491360606, 11759505089220, 47006639297270]

cp's OEIS Frontend

A087433 Expansion of g.f.: (1-2x)(1-4x+x^2)/((1-x)(1-3x)(1-4*x)).

Table of values

List of values

cp's OEIS Frontend

A087433 Expansion of g.f.: (1-2*x)*(1-4*x+x^2)/((1-x)*(1-3*x)*(1-4*x)).

Table of values

List of values

A087433 Expansion of g.f.: (1-2x)(1-4x+x^2)/((1-x)(1-3x)(1-4*x)).