63656

Appears in sequences

• Numbers n such that n and n+1 are differences between 2 positive cubes in at least one way.at n=31A038594
• Numbers n such that sopf(n) = sopf(n+1) - sopf(n-1), where sopf(x) = sum of the distinct prime factors of x.at n=12A076525
• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={0,2}.at n=34A079966
• Octagonal numbers which are the sums of exactly two positive octagonal numbers.at n=28A136346
• Number of (w,x,y,z) with all terms in {1,...,n} and 2*w*x<3*y*z.at n=18A211920
• Octagonal numbers (A000567) in which parity of digits alternates.at n=20A297647