a(n) is the smallest positive integer whose square starts and ends with exactly n identical digits, and a(n) = 0 when there is no such integer.
A346926
a(n) is the smallest positive integer whose square starts and ends with exactly n identical digits, and a(n) = 0 when there is no such integer.
Terms
- a(0) =1a(1) =88a(2) =10538a(3) =235700a(4) =0a(5) =57735000a(6) =0a(7) =14907120000a(8) =0a(10) =0a(12) =0a(14) =0a(16) =0a(18) =0a(20) =0a(22) =0
External references
- oeis: A346926