3784704

Appears in sequences

• 7-fold convolution of A000302 (powers of 4).at n=6A054337
• Number of walks of length n on square lattice, starting at origin, staying on points with x+y >= 0.at n=12A060899
• a(n) = 4^n*(2*n)!/(n!)^2.at n=6A098430
• Expansion of e.g.f. BesselI(0,4*x)+BesselI(1,4*x)/2.at n=12A098664
• Central terms of triangle A249307.at n=12A249308
• a(n) = 2^n*n!/(floor(n/2)!)^2.at n=12A253665
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 846", based on the 5-celled von Neumann neighborhood.at n=21A290555
• Expansion of ((1 + 4*x)/(1 - 4*x))^(1/2).at n=12A304940
• (1/8) times the sum of the elements of all subsets of [n] whose sum is divisible by eight.at n=21A309300
• a(n) = n*binomial(n, n/2) if n is even otherwise 2^(n-1)*binomial(n-1, (n-1)/2).at n=13A389423