A154340 - cp's OEIS frontend

A154340 a(n) = ( (5 + 2sqrt(2))^n - (5 - 2sqrt(2))^n )/(4*sqrt(2)).

n	a(n)
1	1
2	10
3	83
4	660
5	5189
6	40670
7	318487
8	2493480
9	19520521
10	152816050
11	1196311643
12	9365243580
13	73315137869
14	573942237830
15	4493065034527
16	35173632302160
17	275354217434641
18	2155590425209690
19	16874882555708003
20	132103788328515300

[1, 10, 83, 660, 5189, 40670, 318487, 2493480, 19520521, 152816050, 1196311643, 9365243580, 73315137869, 573942237830, 4493065034527, 35173632302160, 275354217434641, 2155590425209690, 16874882555708003, 132103788328515300]

cp's OEIS Frontend

A154340 a(n) = ( (5 + 2sqrt(2))^n - (5 - 2sqrt(2))^n )/(4*sqrt(2)).

Table of values

List of values

cp's OEIS Frontend

A154340 a(n) = ( (5 + 2*sqrt(2))^n - (5 - 2*sqrt(2))^n )/(4*sqrt(2)).

Table of values

List of values

A154340 a(n) = ( (5 + 2sqrt(2))^n - (5 - 2sqrt(2))^n )/(4*sqrt(2)).