267920domain: NAppears in sequencesNumber of (w,x,y,z) with all terms in {1,...,n} and w*x<=y*z+1.at n=27A212053Numbers n such that the sum of the octagonal numbers N(n) and N(n+1) is equal to the sum of the pentagonal numbers P(m) and P(m+1) for some m.at n=1A252003E.g.f.: exp(Sum_{k>=1} A014197(k)*x^k).at n=7A347524