Numbers m such that there exist positive integers i <= m and j >= m such that m = Sum_{k=i..j} A001065(k), where A001065(k) = sum of the proper divisors of k, and i and j do not both equal m.
A346140
Numbers m such that there exist positive integers i <= m and j >= m such that m = Sum_{k=i..j} A001065(k), where A001065(k) = sum of the proper divisors of k, and i and j do not both equal m.
Terms
- a(0) =2a(1) =4a(2) =5a(3) =7a(4) =8a(5) =16a(6) =29a(7) =32a(8) =39a(9) =121a(10) =128a(11) =256a(12) =279a(13) =469a(14) =1299a(15) =3477a(16) =7299a(17) =7525a(18) =8192a(19) =13969a(20) =19262a(21) =19909a(22) =26739a(23) =31493a(24) =54722a(25) =65536a(26) =99381a(27) =131072a(28) =357699a(29) =524288
External references
- oeis: A346140