366667

Appears in sequences

• a(1) = 1; sequence of digits of a(n)^2 is a subsequence of the sequence of digits of a(n+1)^2.at n=8A067633
• Duplicate of A067633.at n=8A091874
• Positive numbers y such that y^2 is of the form x^2+(x+16807)^2 with integer x.at n=25A156713
• a(n) = (11*10^n + 1)/3.at n=5A199690
• Numbers of the form (10^a + 10^b + 1)/3.at n=26A237424