A116426 - cp's OEIS frontend

A116426 The number of n-almost primes less than or equal to 4^n, starting with a(0)=1.

n	a(n)
0	1
1	2
2	6
3	13
4	34
5	77
6	177
7	406
8	887
9	1962
10	4225
11	9094
12	19482
13	41414
14	87706
15	184976
16	389357
17	816193
18	1708412
19	3566209
20	7431153
21	15457234
22	32098652
23	66560309
24	137830562
25	285062028
26	588871107
27	1215176367
28	2505048537
29	5159228725

[1, 2, 6, 13, 34, 77, 177, 406, 887, 1962, 4225, 9094, 19482, 41414, 87706, 184976, 389357, 816193, 1708412, 3566209, 7431153, 15457234, 32098652, 66560309, 137830562, 285062028, 588871107, 1215176367, 2505048537, 5159228725]

cp's OEIS Frontend

A116426 The number of n-almost primes less than or equal to 4^n, starting with a(0)=1.

Table of values

List of values