A271893 - cp's OEIS frontend

A271893 Expansion of (2x+1)(1-x) / ( 1-2x-4x^2+6*x^3 ).

n	a(n)
0	1
1	3
2	8
3	22
4	58
5	156
6	412
7	1100
8	2912
9	7752
10	20552
11	54640
12	144976
13	385200
14	1022464
15	2715872
16	7210400
17	19149504
18	50845376
19	135026368
20	358537216
21	952107648
22	2528205952
23	6713619200
24	17827416320
25	47340073728
26	125708097536
27	333811992064
28	886415931904
29	2353831246848
30	6250454268928
31	16597737933824

[1, 3, 8, 22, 58, 156, 412, 1100, 2912, 7752, 20552, 54640, 144976, 385200, 1022464, 2715872, 7210400, 19149504, 50845376, 135026368, 358537216, 952107648, 2528205952, 6713619200, 17827416320, 47340073728, 125708097536, 333811992064, 886415931904, 2353831246848, 6250454268928, 16597737933824]

cp's OEIS Frontend

A271893 Expansion of (2x+1)(1-x) / ( 1-2x-4x^2+6*x^3 ).

Table of values

List of values

cp's OEIS Frontend

A271893 Expansion of (2*x+1)*(1-x) / ( 1-2*x-4*x^2+6*x^3 ).

Table of values

List of values

A271893 Expansion of (2x+1)(1-x) / ( 1-2x-4x^2+6*x^3 ).