A382996 - cp's OEIS frontend

A382996 a(n) is the least number k such that both k and k + s have n prime divisors, counted with multiplicity, where s is the sum of the decimal digits of k.

n	a(n)
1	11
2	15
3	18
4	81
5	243
6	486
7	2976
8	25488
9	128768
10	396864
11	911232
12	8820864
13	69940224
14	118462464
15	1171768320
16	1756943946
17	11753349120
18	272313556992
19	491737042890
20	2374758457344
21	9766784434176
22	22675979501496
23	269744252387328
24	1546075329527736
25	6138628058382336

[11, 15, 18, 81, 243, 486, 2976, 25488, 128768, 396864, 911232, 8820864, 69940224, 118462464, 1171768320, 1756943946, 11753349120, 272313556992, 491737042890, 2374758457344, 9766784434176, 22675979501496, 269744252387328, 1546075329527736, 6138628058382336]

cp's OEIS Frontend

A382996 a(n) is the least number k such that both k and k + s have n prime divisors, counted with multiplicity, where s is the sum of the decimal digits of k.

Table of values

List of values