Least solution of the equation x' = x + p for increasing values of p, where x' is the arithmetic derivative of x and p is an odd prime. a(n)= -1 if no such solution exists.

A258336

Least solution of the equation x' = x + p for increasing values of p, where x' is the arithmetic derivative of x and p is an odd prime. a(n)= -1 if no such solution exists.

Terms

    a(0) =18a(1) =1554a(2) =53922a(3) =726a(4) =1218a(5) =3230934a(6) =966a(7) =798a(8) =546a(9) =462a(10) =210a(11) =330a(12) =390a(13) =510a(14) =690a(15) =870a(16) =930a(17) =1110a(18) =1230a(19) =1290a(20) =748146a(21) =1590a(22) =1770a(23) =2010a(24) =2130a(25) =2190a(26) =10010a(27) =2370a(28) =2490a(29) =2910

External references