A190156 - cp's OEIS frontend

A190156 Expansion of (1-x-3x^2-sqrt(1-2x-5x^2+2x^3+x^4))/(2x^3(1+2*x)).

n	a(n)
0	1
1	1
2	4
3	8
4	24
5	61
6	175
7	486
8	1405
9	4059
10	11924
11	35223
12	105007
13	314867
14	950018
15	2880620
16	8775638
17	26843704
18	82420464
19	253916555
20	784672011
21	2431695541
22	7555381574
23	23531026853
24	73448858179
25	229730744171
26	719914525210
27	2260031465504
28	7106721944206

[1, 1, 4, 8, 24, 61, 175, 486, 1405, 4059, 11924, 35223, 105007, 314867, 950018, 2880620, 8775638, 26843704, 82420464, 253916555, 784672011, 2431695541, 7555381574, 23531026853, 73448858179, 229730744171, 719914525210, 2260031465504, 7106721944206]

cp's OEIS Frontend

A190156 Expansion of (1-x-3x^2-sqrt(1-2x-5x^2+2x^3+x^4))/(2x^3(1+2*x)).

Table of values

List of values

cp's OEIS Frontend

A190156 Expansion of (1-x-3*x^2-sqrt(1-2*x-5*x^2+2*x^3+x^4))/(2*x^3*(1+2*x)).

Table of values

List of values

A190156 Expansion of (1-x-3x^2-sqrt(1-2x-5x^2+2x^3+x^4))/(2x^3(1+2*x)).