Number of set partitions of [n] having exactly five pairs (m,m+1) such that m is in some block b and m+1 is in block b+1.
A271792
Number of set partitions of [n] having exactly five pairs (m,m+1) such that m is in some block b and m+1 is in block b+1.
Terms
- a(0) =0a(1) =1a(2) =21a(3) =242a(4) =2161a(5) =17081a(6) =127540a(7) =931343a(8) =6781012a(9) =49778592a(10) =370879817a(11) =2815885116a(12) =21840126520a(13) =173297901709
External references
- oeis: A271792