66098

Appears in sequences

• Numbers whose least quadratic nonresidue (A020649) is 19.at n=27A025027
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 73.at n=1A031661
• a(n) = Sum_{k=floor((n+1)/2)..n} binomial(2*k,k).at n=9A129368
• Number of (n+2) X (2+2) 0..3 arrays with every 3 X 3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7.at n=7A252133
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7.at n=37A252139
• Cyclops numbers with circular digits {0,6,8,9}.at n=17A274765