A090634 - cp's OEIS frontend

A090634 Start with the sequence [1, 1/2, 1/3, ..., 1/n]; form new sequence of n-1 terms by taking averages of successive terms; repeat until reach a single number F(n); a(n) = denominator of F(n).

n	a(n)
1	1
2	4
3	12
4	32
5	80
6	64
7	448
8	1024
9	2304
10	5120
11	11264
12	8192
13	53248
14	114688
15	245760
16	524288
17	1114112
18	262144
19	4980736
20	2097152
21	3145728
22	46137344
23	96468992
24	67108864
25	419430400
26	872415232
27	1811939328
28	3758096384
29	7784628224
30	5368709120
31	33285996544
32	68719476736

[1, 4, 12, 32, 80, 64, 448, 1024, 2304, 5120, 11264, 8192, 53248, 114688, 245760, 524288, 1114112, 262144, 4980736, 2097152, 3145728, 46137344, 96468992, 67108864, 419430400, 872415232, 1811939328, 3758096384, 7784628224, 5368709120, 33285996544, 68719476736]

cp's OEIS Frontend

A090634 Start with the sequence [1, 1/2, 1/3, ..., 1/n]; form new sequence of n-1 terms by taking averages of successive terms; repeat until reach a single number F(n); a(n) = denominator of F(n).

Table of values

List of values