5-Stirling numbers of the second kind.

Terms

a(0) =1a(1) =5a(2) =1a(3) =25a(4) =11a(5) =1a(6) =125a(7) =91a(8) =18a(9) =1a(10) =625a(11) =671a(12) =217a(13) =26a(14) =1a(15) =3125a(16) =4651a(17) =2190a(18) =425a(19) =35a(20) =1a(21) =15625a(22) =31031a(23) =19981a(24) =5590a(25) =740a(26) =45a(27) =1a(28) =78125a(29) =201811