Numbers k such that k - sopfr(k) is a positive cube.

Terms

a(0) =1a(1) =6a(2) =16a(3) =58a(4) =172a(5) =254a(6) =360a(7) =519a(8) =1528a(9) =1561a(10) =1755a(11) =1776a(12) =2772a(13) =3582a(14) =4125a(15) =4476a(16) =9606a(17) =12403a(18) =12863a(19) =14203a(20) =16228a(21) =22268a(22) =24522a(23) =29835a(24) =44691a(25) =45277a(26) =48782a(27) =50688a(28) =52410a(29) =57172