50419

Appears in sequences

• a(n) is the smallest integer k such that floor((3/2)^k)/floor((3/2)^n) is an integer greater than 1.at n=28A065644
• Integers k for which {prime(1), prime(2), ..., prime(k)} (mod 4) is biased towards 1.at n=19A096628
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 110-111-111 pattern in any orientation.at n=15A146278
• Numerators of domain values whose images via the flowsnake Q-function follow a spiral trajectory (see comments).at n=16A262147
• Number of n X n 0..1 arrays with every element equal to 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=4A300169
• Number of nX5 0..1 arrays with every element equal to 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=4A300172
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=40A300175