27548

Appears in sequences

• Numbers k such that k^2+k+5 is a palindrome.at n=16A027718
• Number of 4-step one space at a time bishop's tours on an n X n board summed over all starting positions.at n=29A187157
• Number of (n+1) X 2 0..3 arrays with every 2 X 3 or 3 X 2 subblock having no more than two equal edges, and new values 0..3 introduced in row major order.at n=3A206361
• Number of (n+1)X5 0..3 arrays with every 2X3 or 3X2 subblock having no more than two equal edges, and new values 0..3 introduced in row major order.at n=0A206364
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X3 or 3X2 subblock having no more than two equal edges, and new values 0..3 introduced in row major order.at n=6A206366
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X3 or 3X2 subblock having no more than two equal edges, and new values 0..3 introduced in row major order.at n=9A206366
• Fundamental discriminants d uniquely characterizing all complex biquadratic fields Q(sqrt(-3),sqrt(d)) which have 3-class group of type (3,3) and second 3-class group isomorphic to SmallGroup(729,34).at n=12A250241
• Composite numbers n such that n'=(n+8)', where n' is the arithmetic derivative of n.at n=4A257105
• Real part of (n + i)^4.at n=13A272870
• Number of fixed polyominoes with n cells that have a horizontal axis of symmetry that passes through the centers of cells.at n=17A346799