Number of ordered set partitions of [n] such that the smallest element of each block is odd.
A290384
Number of ordered set partitions of [n] such that the smallest element of each block is odd.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =5a(5) =23a(6) =57a(7) =355a(8) =1165a(9) =9135a(10) =37313a(11) =352667a(12) =1723605a(13) =19063207a(14) =108468169a(15) =1374019539a(16) =8920711325a(17) =127336119839a(18) =928899673425
External references
- oeis: A290384