A098405 - cp's OEIS frontend

A098405 Expansion of (1-sqrt(1-8x))/((1-x)(4xsqrt(1-8*x))).

n	a(n)
0	1
1	7
2	47
3	327
4	2343
5	17127
6	126951
7	950631
8	7173991
9	54471527
10	415652711
11	3184708455
12	24485137255
13	188802730855
14	1459525454695
15	11307626564455
16	87775235181415
17	682523302202215
18	5315297718995815
19	41450938169985895
20	323653082644384615
21	2529960757626047335

[1, 7, 47, 327, 2343, 17127, 126951, 950631, 7173991, 54471527, 415652711, 3184708455, 24485137255, 188802730855, 1459525454695, 11307626564455, 87775235181415, 682523302202215, 5315297718995815, 41450938169985895, 323653082644384615, 2529960757626047335]

cp's OEIS Frontend

A098405 Expansion of (1-sqrt(1-8x))/((1-x)(4xsqrt(1-8*x))).

Table of values

List of values

cp's OEIS Frontend

A098405 Expansion of (1-sqrt(1-8*x))/((1-x)*(4*x*sqrt(1-8*x))).

Table of values

List of values

A098405 Expansion of (1-sqrt(1-8x))/((1-x)(4xsqrt(1-8*x))).