6837600domain: NAppears in sequencesNumber of defective (binary) heaps on n elements with exactly two defects.at n=10A323958Number of defective (binary) heaps on n elements with exactly nine defects.at n=3A323965Expansion of e.g.f. (1/x) * Series_Reversion( x*(1 + x^3/6*log(1-x)) ).at n=11A370997