90012

Appears in sequences

• Numbers k such that 2*3^k - 1 is prime.at n=30A003307
• Number of Hamiltonian cycles in O_5 X P_n.at n=3A003743
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 50.at n=11A031728
• a(n) = 144*n^2 + 12.at n=25A158546
• Number of binary strings of length n with no substrings equal to 0000 or 0101.at n=19A164389
• Number of 3 X n 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.at n=8A224354
• Numbers n such that A = n - digitsum(n) is divisible by the largest power of 10 <= A.at n=41A242474
• Number of orthogonal rectangles with vertices on an n X n square grid of points but with no vertices on the grid's diagonals.at n=27A285956