Unsigned 3-Stirling numbers of the first kind.

Terms

a(0) =1a(1) =3a(2) =1a(3) =12a(4) =7a(5) =1a(6) =60a(7) =47a(8) =12a(9) =1a(10) =360a(11) =342a(12) =119a(13) =18a(14) =1a(15) =2520a(16) =2754a(17) =1175a(18) =245a(19) =25a(20) =1a(21) =20160a(22) =24552a(23) =12154a(24) =3135a(25) =445a(26) =33a(27) =1a(28) =181440a(29) =241128