Suppose n=(p1^e1)(p2^e2)... where p1,p2,... are the prime numbers and e1,e2,... are nonnegative integers. Then a(n) = e1 + (e2)*5 + (e3)*25 + (e4)*125 + ... + (ek)*(5^(k-1)) + ...
A090882
Suppose n=(p1^e1)(p2^e2)... where p1,p2,... are the prime numbers and e1,e2,... are nonnegative integers. Then a(n) = e1 + (e2)*5 + (e3)*25 + (e4)*125 + ... + (ek)*(5^(k-1)) + ...
Terms
- a(0) =0a(1) =1a(2) =5a(3) =2a(4) =25a(5) =6a(6) =125a(7) =3a(8) =10a(9) =26a(10) =625a(11) =7a(12) =3125a(13) =126a(14) =30a(15) =4a(16) =15625a(17) =11a(18) =78125a(19) =27a(20) =130a(21) =626a(22) =390625a(23) =8a(24) =50a(25) =3126a(26) =15a(27) =127a(28) =1953125a(29) =31
External references
- oeis: A090882