Number of (binary) heaps with element set [n] and length n+1.
A373496
Number of (binary) heaps with element set [n] and length n+1.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =7a(4) =23a(5) =70a(6) =320a(7) =985a(8) =4690a(9) =19600a(10) =121920a(11) =549600a(12) =3775200a(13) =21964800a(14) =186700800a(15) =983954400a(16) =7898290400a(17) =53301248000a(18) =523712716800
External references
- oeis: A373496