A320565 - cp's OEIS frontend

A320565 a(n) = ((1 + sqrt(4n^2 + 1))^n - (1 - sqrt(4n^2 + 1))^n)/(2^n * sqrt(4*n^2 + 1)).

n	a(n)
0	0
1	1
2	1
3	10
4	33
5	701
6	4033
7	132301
8	1089921
9	48460114
10	520210801
11	29215223489
12	386721507745
13	26250621340841
14	413242502386337
15	32899021525375426
16	600383148312628737
17	54846079150716441949
18	1138470675779123657425
19	117372939125452004885621

[0, 1, 1, 10, 33, 701, 4033, 132301, 1089921, 48460114, 520210801, 29215223489, 386721507745, 26250621340841, 413242502386337, 32899021525375426, 600383148312628737, 54846079150716441949, 1138470675779123657425, 117372939125452004885621]

cp's OEIS Frontend

A320565 a(n) = ((1 + sqrt(4n^2 + 1))^n - (1 - sqrt(4n^2 + 1))^n)/(2^n * sqrt(4*n^2 + 1)).

Table of values

List of values

cp's OEIS Frontend

A320565 a(n) = ((1 + sqrt(4*n^2 + 1))^n - (1 - sqrt(4*n^2 + 1))^n)/(2^n * sqrt(4*n^2 + 1)).

Table of values

List of values

A320565 a(n) = ((1 + sqrt(4n^2 + 1))^n - (1 - sqrt(4n^2 + 1))^n)/(2^n * sqrt(4*n^2 + 1)).