57840

Appears in sequences

• Number of step cyclic shifted sequences using a maximum of three different symbols.at n=13A056411
• Smallest m such that A064672(m) = n.at n=28A064689
• Boustrophedon transform of the continued fraction of e (A003417).at n=9A080408
• Largest x such that 1/x + 1/y + 1/z = 1/n.at n=14A082986
• a(n) = (p+2)!/p! where p is the n-th lesser twin prime, A001359(n).at n=16A126251
• Alexandrian integers: numbers of the form n = p*q*r such that 1/n = 1/p - 1/q - 1/r for some integers p,q,r.at n=34A147811
• a(n) = n*(n+1)*(n*(n+1)+1).at n=16A169938
• a(n) = n^4 + 6n^3 + 14n^2 + 15n + 6.at n=14A176780
• Tropical version of the degree-6 recurrence x(n+6)*x(n) = (x(n+5)*x(n+1))^2 + x(n+4)^2*x(n+3)^4*x(n+2)^2.at n=21A220839
• z-value of the lexicographically first solution (x,y,z) of 4/n = 1/x + 1/y + 1/z with 0 < x < y < z all integers, or 0 if there is no such solution. Corresponding x and y values are in A257839 and A257840.at n=59A257841