75675

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 11.at n=31A031689
• Antidiagonal sums of square array A108998, in which row n equals the coordination sequence of B_n lattice.at n=10A109000
• a(n) = 121*n^2 + 2*n.at n=24A181679
• Number of (n+1)X(n+1) -10..10 symmetric matrices with every 2X2 subblock having sum zero and one or three distinct values.at n=9A211815
• Least integer k such that k/2^n > sqrt(1/3).at n=17A293328