65448

Appears in sequences

• Numbers that have exactly eight prime factors counted with multiplicity (A046310) whose digit reversal is different and also has 8 prime factors (with multiplicity).at n=8A109028
• Numbers k such that both k and k^2/2 are averages of twin prime pairs.at n=39A152787
• Number of (w,x,y,z) with all terms in {1,...,n} and w<=|x-y|+|y-z|.at n=18A212673
• a(n) is the smallest number which can be represented as the sum of n distinct centered n-gonal numbers in exactly n ways, or -1 if no such number exists.at n=21A352975