Numbers k such that core(k) = b(k,1)*b(k,0) where b(k,1) is the number of 1's in binary representation of k, b(k,0) the number of 0's and core(k) the squarefree part of k.

A071639

Numbers k such that core(k) = b(k,1)*b(k,0) where b(k,1) is the number of 1's in binary representation of k, b(k,0) the number of 0's and core(k) the squarefree part of k.

Terms

    a(0) =24a(1) =3500a(2) =6048a(3) =52855a(4) =56320a(5) =67270a(6) =71874a(7) =80920a(8) =85536a(9) =95830a(10) =105600a(11) =112000a(12) =117670a(13) =131625a(14) =142373a(15) =155925a(16) =250173a(17) =262392a(18) =280800a(19) =350142a(20) =360672a(21) =673036a(22) =965419a(23) =984256a(24) =1041859a(25) =1078110a(26) =1144440a(27) =1166990a(28) =1283040a(29) =1331000

External references