a(n) = (2/(n-1))*a(n-1) + ((n+5)/(n-1))*a(n-2) with a(0)=0 and a(1)=1.

Terms

a(0) =0a(1) =1a(2) =2a(3) =6a(4) =10a(5) =20a(6) =30a(7) =50a(8) =70a(9) =105a(10) =140a(11) =196a(12) =252a(13) =336a(14) =420a(15) =540a(16) =660a(17) =825a(18) =990a(19) =1210a(20) =1430a(21) =1716a(22) =2002a(23) =2366a(24) =2730a(25) =3185a(26) =3640a(27) =4200a(28) =4760a(29) =5440