54413

Properties

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = A000201 (lower Wythoff sequence).at n=26A024474
• Number of binary [ n,4 ] codes without 0 columns.at n=18A034345
• Largest prime dividing Sum_{k=0..n} k! * (n-k)!.at n=32A049413
• Primes in A118482.at n=15A172102
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 485", based on the 5-celled von Neumann neighborhood.at n=34A288594
• Expansion of 1 / Sum_{k>=0} (-x)^(k*(3*k - 1)/2).at n=44A308806
• Prime numbersat n=5536