13000000

Appears in sequences

• a(1) = 1; string of digits of a(n)^2 is a substring of the string of digits of a(n+1)^2.at n=8A067634
• Erroneous version of A052218.at n=13A094628
• Numbers of the form (10^i)*(13^j), with i, j >= 0.at n=29A108761
• a(n) is the smallest number whose English name has the letter "i" in the n-th position, or -1 if no such number exists.at n=9A164793