A123012 - cp's OEIS frontend

A123012 Expansion of 1/(1 - 2x - 21x^2).

n	a(n)
0	1
1	2
2	25
3	92
4	709
5	3350
6	21589
7	113528
8	680425
9	3744938
10	21778801
11	122201300
12	701757421
13	3969742142
14	22676390125
15	128717365232
16	733638923089
17	4170342516050
18	23747102416969
19	135071397670988
20	768831946098325
21	4374163243287398
22	24893797354639621
23	141645022818314600

[1, 2, 25, 92, 709, 3350, 21589, 113528, 680425, 3744938, 21778801, 122201300, 701757421, 3969742142, 22676390125, 128717365232, 733638923089, 4170342516050, 23747102416969, 135071397670988, 768831946098325, 4374163243287398, 24893797354639621, 141645022818314600]

cp's OEIS Frontend

A123012 Expansion of 1/(1 - 2x - 21x^2).

Table of values

List of values

cp's OEIS Frontend

A123012 Expansion of 1/(1 - 2*x - 21*x^2).

Table of values

List of values

A123012 Expansion of 1/(1 - 2x - 21x^2).