A247105 - cp's OEIS frontend

A247105 Variation of Flavius Josephus's sieve: Start with the natural numbers; at the k-th sieving step, make k passes removing every k-th term of the sequence remaining after the previous sieving step; iterate.

n	a(n)
1	1
2	5
3	25
4	109
5	385
6	1373
7	4645
8	16009
9	48817
10	159757
11	488377
12	1571425
13	4560901
14	14482393
15	43408013
16	130394125
17	380755429
18	1118740741
19	3326930413
20	9931863461
21	28466058257
22	84243573797
23	240453967777
24	706827067045
25	2009065808473
26	5913933615149
27	16711898903281

[1, 5, 25, 109, 385, 1373, 4645, 16009, 48817, 159757, 488377, 1571425, 4560901, 14482393, 43408013, 130394125, 380755429, 1118740741, 3326930413, 9931863461, 28466058257, 84243573797, 240453967777, 706827067045, 2009065808473, 5913933615149, 16711898903281]

cp's OEIS Frontend

A247105 Variation of Flavius Josephus's sieve: Start with the natural numbers; at the k-th sieving step, make k passes removing every k-th term of the sequence remaining after the previous sieving step; iterate.

Table of values

List of values