Near-Bell numbers: partitions of an n-multiset with multiplicities 1, 1, 1, ..., 1, 2.
A035098
Near-Bell numbers: partitions of an n-multiset with multiplicities 1, 1, 1, ..., 1, 2.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =11a(4) =36a(5) =135a(6) =566a(7) =2610a(8) =13082a(9) =70631a(10) =407846a(11) =2504071a(12) =16268302a(13) =111378678a(14) =800751152a(15) =6027000007a(16) =47363985248a(17) =387710909055
External references
- oeis: A035098