285613

Properties

Appears in sequences

• Primes of the form 5n^2 + 8.at n=29A201486
• Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=3A302738
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=31A302741
• Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=4A302743
• E.g.f. A(x) satisfies A(x) = exp( x * (1-x^2) * A(x)^2 ).at n=6A387900
• Prime numbersat n=24890