A303647 - cp's OEIS frontend

A303647 a(n) = ceiling(a(n-1)/(2^(1/3)-1)+1), a(1)=1.

n	a(n)
1	1
2	5
3	21
4	82
5	317
6	1221
7	4699
8	18080
9	69561
10	267625
11	1029641
12	3961362
13	15240637
14	58635641
15	225590199
16	867918160
17	3339160721
18	12846826845
19	49425880861
20	190157283842
21	731596320957
22	2814686695261
23	10829006332499
24	41662675404240
25	160289731905481
26	616686228261665

[1, 5, 21, 82, 317, 1221, 4699, 18080, 69561, 267625, 1029641, 3961362, 15240637, 58635641, 225590199, 867918160, 3339160721, 12846826845, 49425880861, 190157283842, 731596320957, 2814686695261, 10829006332499, 41662675404240, 160289731905481, 616686228261665]

cp's OEIS Frontend

A303647 a(n) = ceiling(a(n-1)/(2^(1/3)-1)+1), a(1)=1.

Table of values

List of values