A025237 - cp's OEIS frontend

A025237 Expansion of (1 -x -sqrt(1-2x-11x^2))/(6*x^2).

n	a(n)
0	1
1	1
2	4
3	10
4	37
5	121
6	451
7	1639
8	6259
9	23923
10	93502
11	367852
12	1465003
13	5874103
14	23740276
15	96503554
16	394542379
17	1620716251
18	6687296308
19	27700303510
20	115152607831
21	480244735171
22	2008802728819
23	8425318166635
24	35425680021397
25	149296062114181
26	630526903497706
27	2668194946794124
28	11311786743536125

[1, 1, 4, 10, 37, 121, 451, 1639, 6259, 23923, 93502, 367852, 1465003, 5874103, 23740276, 96503554, 394542379, 1620716251, 6687296308, 27700303510, 115152607831, 480244735171, 2008802728819, 8425318166635, 35425680021397, 149296062114181, 630526903497706, 2668194946794124, 11311786743536125]

cp's OEIS Frontend

A025237 Expansion of (1 -x -sqrt(1-2x-11x^2))/(6*x^2).

Table of values

List of values

cp's OEIS Frontend

A025237 Expansion of (1 -x -sqrt(1-2*x-11*x^2))/(6*x^2).

Table of values

List of values

A025237 Expansion of (1 -x -sqrt(1-2x-11x^2))/(6*x^2).