A235176 Numbers k such that the sum of the first k refactorable numbers (A033950) is also a refactorable number.
1, 47, 125, 131, 185, 187, 189, 191, 198, 201, 204, 206, 256, 257, 262, 264, 268, 276, 283, 285, 294, 800, 809, 812, 818, 822, 824, 827, 829, 840, 844, 848, 1076, 1080, 1118, 1119, 1133, 1135, 1151, 1153, 1164, 1171, 1175, 1183, 1186, 1189, 1195, 1208, 1210
Offset: 1
Keywords
Examples
The sum of the first 47 terms of A033950 equals 9120, which is A033950(616).
Links
- Giovanni Resta, Table of n, a(n) for n = 1..1000
Extensions
a(8)-a(49) from Giovanni Resta, Jan 04 2014