659712domain: NAppears in sequencesG.f.: A(x) = exp( Sum_{n>=1} A005260(n)*x^n/n ) where A005260(n) = Sum_{k=0..n} C(n,k)^4.at n=7A166992Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y<3z.at n=32A212508Composites whose prime factorization in base 9 is an anagram of the number in base 9.at n=13A260053