A263688 - cp's OEIS frontend

A263688 c(n) in (sqrt(2))_n = b(n) + c(n)*sqrt(2), where (x)_n is the Pochhammer symbol, b(n) and c(n) are integers.

n	a(n)
0	0
1	1
2	1
3	4
4	18
5	98
6	630
7	4676
8	39368
9	370748
10	3861900
11	44087008
12	547360968
13	7342948312
14	105848450344
15	1631635791184
16	26782838577600
17	466413214471568
18	8588795078851344
19	166747235206457024
20	3404055687248777120
21	72895914363584236064
22	1633918325381940384864

[0, 1, 1, 4, 18, 98, 630, 4676, 39368, 370748, 3861900, 44087008, 547360968, 7342948312, 105848450344, 1631635791184, 26782838577600, 466413214471568, 8588795078851344, 166747235206457024, 3404055687248777120, 72895914363584236064, 1633918325381940384864]

cp's OEIS Frontend

A263688 c(n) in (sqrt(2))_n = b(n) + c(n)*sqrt(2), where (x)_n is the Pochhammer symbol, b(n) and c(n) are integers.

Table of values

List of values