1,2

Table of n, a(n) for n=1..13.

a(3) = 1444 because it has 3 adjacent 4's and no square less than 1444 has 3 adjacent digits which are the same.

Sequence in context: A222515 A023096 A223435 * A137416 A109117 A209205

Adjacent sequences: A169856 A169857 A169858 * A169860 A169861 A169862

nonn,base

Jon E. Schoenfield, May 14 2010

approved