a(n) is the smallest positive integer k such that floor((k + 1)^2/10^n) - floor(k^2/10^n) = 2.
A322667
a(n) is the smallest positive integer k such that floor((k + 1)^2/10^n) - floor(k^2/10^n) = 2.
Terms
- a(0) =7a(1) =59a(2) =531a(3) =5099a(4) =50316a(5) =500999a(6) =5003162a(7) =50009999a(8) =500031622a(9) =5000099999a(10) =50000316227a(11) =500000999999
External references
- oeis: A322667