62252domain: NAppears in sequencesNumber of (3412,1234)-avoiding involutions in S_n.at n=41A085583Number of polyominoes consisting of 6 regular unit n-gons.at n=27A103472Maximal coefficient of (1 + x) * (1 + x^3) * (1 + x^6) * ... * (1 + x^(n*(n+1)/2)).at n=26A359348