Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most nine elements and for at least one block c the smallest integer interval containing c has exactly nine elements.
A320559
Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most nine elements and for at least one block c the smallest integer interval containing c has exactly nine elements.
Terms
- a(0) =4140a(1) =30751a(2) =158766a(3) =705926a(4) =2928164a(5) =11774145a(6) =46852653a(7) =186723275a(8) =759062433a(9) =3170429794a(10) =13343960839a(11) =56013146481a(12) =233387096649a(13) =963938933894
External references
- oeis: A320559