A271897 - cp's OEIS frontend

A271897 Expansion of ( 1-2x+3x^2 ) / ( 1-4x+5x^2-4*x^3 ).

n	a(n)
0	1
1	2
2	6
3	18
4	50
5	134
6	358
7	962
8	2594
9	6998
10	18870
11	50866
12	137106
13	369574
14	996230
15	2685474
16	7239042
17	19513718
18	52601558
19	141793810
20	382222322
21	1030326470
22	2777369510
23	7486734978
24	20181398242
25	54401396118
26	146645533174
27	395300745074
28	1065580898898
29	2872402002918
30	7742906497478
31	20871939570914

[1, 2, 6, 18, 50, 134, 358, 962, 2594, 6998, 18870, 50866, 137106, 369574, 996230, 2685474, 7239042, 19513718, 52601558, 141793810, 382222322, 1030326470, 2777369510, 7486734978, 20181398242, 54401396118, 146645533174, 395300745074, 1065580898898, 2872402002918, 7742906497478, 20871939570914]

cp's OEIS Frontend

A271897 Expansion of ( 1-2x+3x^2 ) / ( 1-4x+5x^2-4*x^3 ).

Table of values

List of values

cp's OEIS Frontend

A271897 Expansion of ( 1-2*x+3*x^2 ) / ( 1-4*x+5*x^2-4*x^3 ).

Table of values

List of values

A271897 Expansion of ( 1-2x+3x^2 ) / ( 1-4x+5x^2-4*x^3 ).