114080domain: NAppears in sequencesNumbers n such that n-th and (n+1)-th primes are in A125146.at n=13A128120a(n) = 2*n^3 - 3*n^2 + 5.at n=39A152064Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y>=3z.at n=31A212515a(n) = n*(15*n^2 - 15*n + 4).at n=20A272134