95746domain: NAppears in sequencesHeptagonal numbers A000566 which are the sum of two other heptagonal numbers > 0.at n=29A133251a(n) = (n + 1)^2*(5*n^2 + 10*n + 2)/2.at n=13A269237Numbers k such that there is no prime p and index j < k such that A002182(k) = p * A002182(j).at n=28A272606