300000001

Appears in sequences

• Numbers k such that k^2+k+7 is a palindrome.at n=22A027722
• a(n) = sqrt(A077204(n)).at n=16A077205
• a(1) = 1; for n>1, a(n) = smallest number > a(n-1) such that last digit of a(n-1) + first digit of a(n) = 3.at n=25A098408
• a(n) = 3*10^n + 1.at n=8A199683