775045domain: NAppears in sequencesNumber of strings of numbers x(i=1..9) in 0..n with sum i^2*x(i) equal to n*81.at n=9A183960Total number of sequences with c_j copies of j and longest increasing subsequence of length k summed over all compositions [c_1, c_2, ..., c_k] of n.at n=10A268699