Smallest k such that the sum of digits of k^2 in base 10 is divisible by n.
A389004
Smallest k such that the sum of digits of k^2 in base 10 is divisible by n.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =2a(4) =8a(5) =24a(6) =4a(7) =13a(8) =3a(9) =8a(10) =43a(11) =264a(12) =7a(13) =134a(14) =1374a(15) =13a(16) =167a(17) =24a(18) =17a(19) =313a(20) =8937a(21) =43a(22) =836a(23) =60663a(24) =67a(25) =2236a(26) =63a(27) =134a(28) =6833a(29) =545793
External references
- oeis: A389004