a(n)^2 is smallest positive square starting with a string of n 2's.
A034980
a(n)^2 is smallest positive square starting with a string of n 2's.
Terms
- a(0) =1a(1) =5a(2) =15a(3) =149a(4) =4714a(5) =47141a(6) =471405a(7) =1490712a(8) =1490712a(9) =471404521a(10) =1490711985a(11) =1490711985a(12) =1490711985a(13) =1490711985
External references
- oeis: A034980