63999

Appears in sequences

• Gaps of 9 in sequence A038593 (lower terms).at n=32A038657
• Harmonic mean of digits is 6.at n=38A062184
• a(n) = n^3 - 1.at n=39A068601
• Triangle read by rows: T(n, k) = 10^(n-1) - 1 + k*floor(9*10^(n-1)/n), for 1 <= k <= n.at n=12A093846
• a(n) = n^3 + (-1)^(n+1).at n=40A123363
• n^3 - 1 divided by its largest cube divisor.at n=38A128972
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 10000-11111-10000 pattern in any orientation.at n=17A147081
• a(n) = 40*n^2 - 1.at n=39A158598
• Numbers n such that m=(n^2+1)/2, p=(m^2+1)/2 and q=(p^2+1)/2 are all prime.at n=29A188546
• Order of Fibonacci group F(n,3) (or 0 if the group is infinite).at n=39A202625
• Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y>=3z.at n=27A212511
• Denominators of the continued fraction convergents of log_10((1+sqrt(5))/2).at n=11A217686
• Cubefree numbers n such that n + 1 is a perfect cube.at n=29A268861
• 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 291", based on the 5-celled von Neumann neighborhood.at n=15A287502
• a(n) is the least k > n such that n divides k, and n+1 divides k+1, and n+2 divides k+2.at n=38A295388