Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 16 (most significant digit on right).

A061969

Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 16 (most significant digit on right).

Terms

    a(0) =1a(1) =3a(2) =5a(3) =9a(4) =15a(5) =25a(6) =41a(7) =1149a(8) =1755a(9) =2009a(10) =2815a(11) =6981a(12) =19117a(13) =65515a(14) =218715a(15) =315735a(16) =405845a(17) =1511139a(18) =2165055a(19) =7076685

External references