Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 21 (most significant digit on right).
A061950
Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 21 (most significant digit on right).
Terms
- a(0) =1a(1) =3a(2) =5a(3) =7a(4) =15a(5) =25a(6) =80a(7) =321a(8) =401a(9) =1105a(10) =1440a(11) =2185a(12) =17665a(13) =26585a(14) =132920a(15) =287216a(16) =659355a(17) =1267785a(18) =2096240a(19) =3612505
External references
- oeis: A061950