Numbers k that form a primitive Pythagorean triple with k' and sqrt(k^2 + k'^2), where k' is the arithmetic derivative of k.
A210503
Numbers k that form a primitive Pythagorean triple with k' and sqrt(k^2 + k'^2), where k' is the arithmetic derivative of k.
Terms
- a(0) =15a(1) =35a(2) =143a(3) =323a(4) =899a(5) =1763a(6) =3599a(7) =4641a(8) =5183a(9) =10403a(10) =11663a(11) =13585a(12) =19043a(13) =22499a(14) =32399a(15) =35581a(16) =36863a(17) =39203a(18) =51983a(19) =57599a(20) =72899a(21) =79523a(22) =97343a(23) =121103a(24) =176399a(25) =186623a(26) =213443a(27) =272483a(28) =324899a(29) =359999
External references
- oeis: A210503