Number of permutations generated by passing an ordered sequence of length n through a stack of depth 2 and an infinite stack in series.
A245233
Number of permutations generated by passing an ordered sequence of length n through a stack of depth 2 and an infinite stack in series.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =114a(6) =592a(7) =3216a(8) =17904a(9) =101198a(10) =578208a(11) =3332136a(12) =19343408a(13) =113017332a(14) =664168160a(15) =3923729280a(16) =23291913440a(17) =138872375958a(18) =831321465408
External references
- oeis: A245233