268040

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and |w-x| <= |x-y| + |y-z|.at n=24A212572
• Minimal absolute discriminants a(n) of complex quadratic fields with 3-class group of type (3,3), 3-principalization type E.6 (1122), and second 3-class group G of odd nilpotency class cl(G)=2(n+2)+1.at n=1A247692