Numbers k such that sum of divisors of k is a square and a triangular number (A000217). That is, numbers k such that A000203(k) is in A001110.

A232847

Numbers k such that sum of divisors of k is a square and a triangular number (A000217). That is, numbers k such that A000203(k) is in A001110.

Terms

    a(0) =1a(1) =22a(2) =17310a(3) =20802a(4) =23110a(5) =24262a(6) =25995a(7) =26542a(8) =29427a(9) =31735a(10) =33835a(11) =38137a(12) =39287a(13) =39859a(14) =40967a(15) =13595040a(16) =14285160a(17) =15129504a(18) =15378336a(19) =15834528a(20) =15912936a(21) =16327008a(22) =16555752a(23) =16897896a(24) =16908264a(25) =17054388a(26) =17145432a(27) =17749044a(28) =18013428a(29) =20239146

External references