A271895 - cp's OEIS frontend

A271895 Expansion of (1-2x^2) / ( 1-2x-4x^2+6x^3 ).

n	a(n)
0	1
1	2
2	6
3	14
4	40
5	100
6	276
7	712
8	1928
9	5048
10	13536
11	35696
12	95248
13	252064
14	670944
15	1778656
16	4728704
17	12546368
18	33335616
19	88484480
20	235033216
21	623990656
22	1657207296
23	4400177920
24	11685241088
25	31027950080
26	82395796992
27	218791947776
28	580999383040
29	1542791775232

[1, 2, 6, 14, 40, 100, 276, 712, 1928, 5048, 13536, 35696, 95248, 252064, 670944, 1778656, 4728704, 12546368, 33335616, 88484480, 235033216, 623990656, 1657207296, 4400177920, 11685241088, 31027950080, 82395796992, 218791947776, 580999383040, 1542791775232]

cp's OEIS Frontend

A271895 Expansion of (1-2x^2) / ( 1-2x-4x^2+6x^3 ).

Table of values

List of values

cp's OEIS Frontend

A271895 Expansion of (1-2*x^2) / ( 1-2*x-4*x^2+6*x^3 ).

Table of values

List of values

A271895 Expansion of (1-2x^2) / ( 1-2x-4x^2+6x^3 ).