30040

Appears in sequences

• Boustrophedon transform (first version) of Fibonacci numbers 0,1,1,2,3,5,...at n=9A000687
• a(n) = 2nd elementary symmetric function of the first n+1 odd positive integers.at n=14A024196
• Expansion of (1+2*x+3*x^2)/((1-x)^3*(1-x^2)).at n=38A055232
• a(n) = 40*(200*n - 49).at n=3A157652
• Expansion of (1+x-x^2)/((1-x)*(1-3*x^2-x^3)).at n=16A217733
• Irregular triangular array T(n,k) of consecutive composites.at n=37A226085
• Numbers k such that Bernoulli number B_{k} has denominator 13530.at n=19A295587
• Maximum detour index of any bipartite graph on n nodes.at n=39A296819
• Numbers k such that (A276086(k)/s)^s < k^(s-1), where A276086 is the primorial base exp-function, and s = bigomega(k).at n=52A370127
• a(n) = Sum_{k=0..floor(n/3)} 2^(n-3*k) * binomial(2*n-4*k+1,2*k).at n=10A387692