A089897 - cp's OEIS frontend

A089897 a(n) = floor(Li(2^n)), where Li(x) is the integral from 0 to x of dt/log(t).

n	a(n)
1	1
2	2
3	5
4	8
5	13
6	21
7	36
8	60
9	103
10	181
11	321
12	576
13	1047
14	1919
15	3544
16	6583
17	12296
18	23069
19	43453
20	82137
21	155739
22	296113
23	564411
24	1078221
25	2063984
26	3958349
27	7604383
28	14631777
29	28194305
30	54401475
31	105100230
32	203284081
33	393619392
34	762944445

[1, 2, 5, 8, 13, 21, 36, 60, 103, 181, 321, 576, 1047, 1919, 3544, 6583, 12296, 23069, 43453, 82137, 155739, 296113, 564411, 1078221, 2063984, 3958349, 7604383, 14631777, 28194305, 54401475, 105100230, 203284081, 393619392, 762944445]

cp's OEIS Frontend

A089897 a(n) = floor(Li(2^n)), where Li(x) is the integral from 0 to x of dt/log(t).

Table of values

List of values