Numbers n for which there exists k < n such that A000203(k) = A000203(n) and A007947(k) = A007947(n), where A000203 gives the sum of divisors, and A007947 gives the squarefree kernel of n.

A255335

Numbers n for which there exists k < n such that A000203(k) = A000203(n) and A007947(k) = A007947(n), where A000203 gives the sum of divisors, and A007947 gives the squarefree kernel of n.

Terms

    a(0) =2058a(1) =10290a(2) =22638a(3) =26754a(4) =34986a(5) =39102a(6) =47334a(7) =51450a(8) =52728a(9) =59682a(10) =63798a(11) =76146a(12) =84378a(13) =88494a(14) =96726a(15) =109074a(16) =113190a(17) =121422a(18) =125538a(19) =133770a(20) =137886a(21) =146118a(22) =150234a(23) =162582a(24) =170814a(25) =174930a(26) =183162a(27) =195510a(28) =199626a(29) =207858

External references