Partition number array, called M32(-2), related to A004747(n,m) = |S2(-2;n,m)| (generalized Stirling triangle).

A143172

Partition number array, called M32(-2), related to A004747(n,m) = |S2(-2;n,m)| (generalized Stirling triangle).

Terms

    a(0) =1a(1) =2a(2) =1a(3) =10a(4) =6a(5) =1a(6) =80a(7) =40a(8) =12a(9) =12a(10) =1a(11) =880a(12) =400a(13) =200a(14) =100a(15) =60a(16) =20a(17) =1a(18) =12320a(19) =5280a(20) =2400a(21) =1000a(22) =1200a(23) =1200a(24) =120a(25) =200a(26) =180a(27) =30a(28) =1a(29) =209440

External references