A191597 - cp's OEIS frontend

A191597 Expansion of x(1+3x)/ ( (1-4x)(1+x+x^2)).

n	a(n)
0	0
1	1
2	6
3	21
4	85
5	342
6	1365
7	5461
8	21846
9	87381
10	349525
11	1398102
12	5592405
13	22369621
14	89478486
15	357913941
16	1431655765
17	5726623062
18	22906492245
19	91625968981
20	366503875926
21	1466015503701
22	5864062014805
23	23456248059222
24	93824992236885
25	375299968947541

[0, 1, 6, 21, 85, 342, 1365, 5461, 21846, 87381, 349525, 1398102, 5592405, 22369621, 89478486, 357913941, 1431655765, 5726623062, 22906492245, 91625968981, 366503875926, 1466015503701, 5864062014805, 23456248059222, 93824992236885, 375299968947541]

cp's OEIS Frontend

A191597 Expansion of x(1+3x)/ ( (1-4x)(1+x+x^2)).

Table of values

List of values

cp's OEIS Frontend

A191597 Expansion of x*(1+3*x)/ ( (1-4*x)*(1+x+x^2)).

Table of values

List of values

A191597 Expansion of x(1+3x)/ ( (1-4x)(1+x+x^2)).