Number of defective (binary) heaps on n elements from the set {0,1} where exactly one ancestor-successor pair does not have the correct order.

A372643

Number of defective (binary) heaps on n elements from the set {0,1} where exactly one ancestor-successor pair does not have the correct order.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =2a(4) =4a(5) =6a(6) =13a(7) =22a(8) =36a(9) =54a(10) =99a(11) =164a(12) =260a(13) =400a(14) =692a(15) =1146a(16) =1730a(17) =2638a(18) =4358a(19) =7148a(20) =10788a(21) =16716a(22) =27168a(23) =44692a(24) =65630a(25) =100736a(26) =159851a(27) =261156a(28) =385740a(29) =599704

External references