[ 4th elementary symmetric function of sqrt(k+1) ], k = 1,2,...,n.

Terms

a(0) =10a(1) =70a(2) =266a(3) =763a(4) =1835a(5) =3911a(6) =7614a(7) =13820a(8) =23709a(9) =38835a(10) =61192a(11) =93292a(12) =138244a(13) =199846a(14) =282674a(15) =392185a(16) =534822a(17) =718122a(18) =950838a(19) =1243061a(20) =1606347a(21) =2053855a(22) =2600487a(23) =3263034a(24) =4060332a(25) =5013417a(26) =6145691a(27) =7483098a(28) =9054291a(29) =10890824