A176717 - cp's OEIS frontend

A176717 Numbers n such that sum of digits of all distinct prime factors of n-th semiprime = sum of digits of all distinct prime factors of (n+1)-th semiprime.

n	a(n)
1	13
2	15
3	16
4	20
5	79
6	91
7	111
8	116
9	117
10	119
11	125
12	131
13	205
14	215
15	225
16	250
17	276
18	282
19	284
20	298
21	303
22	313
23	332
24	340
25	362
26	364
27	446
28	501
29	523
30	554
31	562
32	686
33	720
34	728
35	759
36	796
37	798
38	830
39	877
40	904
41	923
42	925
43	953
44	962
45	978
46	986
47	988
48	992
49	1007
50	1056
51	1097
52	1117

[13, 15, 16, 20, 79, 91, 111, 116, 117, 119, 125, 131, 205, 215, 225, 250, 276, 282, 284, 298, 303, 313, 332, 340, 362, 364, 446, 501, 523, 554, 562, 686, 720, 728, 759, 796, 798, 830, 877, 904, 923, 925, 953, 962, 978, 986, 988, 992, 1007, 1056, 1097, 1117]

cp's OEIS Frontend

A176717 Numbers n such that sum of digits of all distinct prime factors of n-th semiprime = sum of digits of all distinct prime factors of (n+1)-th semiprime.

Table of values

List of values