74648

Appears in sequences

• Number of inequivalent ways (mod D_4) a pair of checkers can be placed on an n X n board.at n=32A014409
• Fibonacci sequence beginning 3, 16.at n=19A022126
• a(n) = 2*sum(C(n,2k+1)*F(2k), k=0..floor((n-1)/2)), where F(n) are Fibonacci numbers A000045.at n=12A097040
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+577)^2 = y^2.at n=10A130005
• Numbers of intervals for the pruning-grafting lattices of size n.at n=6A152093
• s(k)-s(j), where the pairs (k,j) are given by A205862 and A205863, and s(k) denotes the (k+1)-st Fibonacci number.at n=38A205864