A290147 - cp's OEIS frontend

A290147 Expansion of (1-sqrt(1-8x-8x^2))/(4*x).

n	a(n)
0	1
1	3
2	12
3	66
4	408
5	2712
6	18912
7	136488
8	1010784
9	7637664
10	58650240
11	456377664
12	3590674176
13	28516332288
14	228297907200
15	1840515987072
16	14929020470784
17	121749590032896
18	997676696045568
19	8210704762960896
20	67835018440593408
21	562407734010335232
22	4677727530446635008

[1, 3, 12, 66, 408, 2712, 18912, 136488, 1010784, 7637664, 58650240, 456377664, 3590674176, 28516332288, 228297907200, 1840515987072, 14929020470784, 121749590032896, 997676696045568, 8210704762960896, 67835018440593408, 562407734010335232, 4677727530446635008]

cp's OEIS Frontend

A290147 Expansion of (1-sqrt(1-8x-8x^2))/(4*x).

Table of values

List of values

cp's OEIS Frontend

A290147 Expansion of (1-sqrt(1-8*x-8*x^2))/(4*x).

Table of values

List of values

A290147 Expansion of (1-sqrt(1-8x-8x^2))/(4*x).