A238846 - cp's OEIS frontend

A238846 Expansion of (1-2x)/(1-3x+x^2)^2.

n	a(n)
0	1
1	4
2	13
3	40
4	120
5	354
6	1031
7	2972
8	8495
9	24110
10	68016
11	190884
12	533293
13	1484020
14	4115185
15	11375764
16	31358376
17	86223942
18	236540915
19	647556620
20	1769374931
21	4826148314
22	13142564448
23	35736448200
24	97037995225
25	263156279524
26	712795854421
27	1928547574912
28	5212430732760

[1, 4, 13, 40, 120, 354, 1031, 2972, 8495, 24110, 68016, 190884, 533293, 1484020, 4115185, 11375764, 31358376, 86223942, 236540915, 647556620, 1769374931, 4826148314, 13142564448, 35736448200, 97037995225, 263156279524, 712795854421, 1928547574912, 5212430732760]

cp's OEIS Frontend

A238846 Expansion of (1-2x)/(1-3x+x^2)^2.

Table of values

List of values

cp's OEIS Frontend

A238846 Expansion of (1-2*x)/(1-3*x+x^2)^2.

Table of values

List of values

A238846 Expansion of (1-2x)/(1-3x+x^2)^2.