a(n) is the least integer m such that the sum of the digits of m^2 is k+n where k is the number of digits of n.
A369956
a(n) is the least integer m such that the sum of the digits of m^2 is k+n where k is the number of digits of n.
Terms
- a(0) =1a(1) =101a(2) =11a(3) =2a(4) =149a(5) =32a(6) =4a(7) =12a(8) =3a(9) =8a(10) =106a(11) =16a(12) =7a(13) =103a(14) =13a(15) =108a(16) =24a(17) =17a(18) =1019a(19) =124a(20) =43a(21) =1013a(22) =113a(23) =67a(24) =114a(25) =63a(26) =10024a(27) =1024a(28) =133a(29) =83
External references
- oeis: A369956