Numbers k that divide the (left) concatenation of all numbers <= k written in base 21 (most significant digit on left).
A029490
Numbers k that divide the (left) concatenation of all numbers <= k written in base 21 (most significant digit on left).
Terms
- a(0) =1a(1) =5a(2) =25a(3) =43a(4) =55a(5) =128a(6) =275a(7) =1280a(8) =2816a(9) =5888a(10) =6400a(11) =12800a(12) =28160a(13) =33413a(14) =37376a(15) =129919a(16) =140800a(17) =286025a(18) =352000a(19) =990845a(20) =1050880a(21) =1773725a(22) =2848000a(23) =3581033a(24) =4343680a(25) =4428160a(26) =5624960a(27) =6732160a(28) =7553920a(29) =8497280
External references
- oeis: A029490