A170923 - cp's OEIS frontend

A170923 a(n) = denominator of the coefficient c(n) of x^n in sqrt(1+x)/Product_{k=1..n-1} 1 + c(k)*x^k, n = 1, 2, 3, ...

n	a(n)
1	2
2	8
3	8
4	128
5	32
6	512
7	128
8	32768
9	128
10	32768
11	2048
12	2097152
13	8192
14	2097152
15	32768
16	2147483648
17	131072
18	16777216
19	524288
20	34359738368
21	2097152
22	8589934592
23	8388608
24	35184372088832
25	524288
26	549755813888
27	33554432
28	562949953421312
29	536870912
30	35184372088832

[2, 8, 8, 128, 32, 512, 128, 32768, 128, 32768, 2048, 2097152, 8192, 2097152, 32768, 2147483648, 131072, 16777216, 524288, 34359738368, 2097152, 8589934592, 8388608, 35184372088832, 524288, 549755813888, 33554432, 562949953421312, 536870912, 35184372088832]

cp's OEIS Frontend

A170923 a(n) = denominator of the coefficient c(n) of x^n in sqrt(1+x)/Product_{k=1..n-1} 1 + c(k)*x^k, n = 1, 2, 3, ...

Table of values

List of values