[ (n-1)st elementary symmetric function of {sqrt(k)} ], k = 1,2,...,n.

Terms

a(0) =1a(1) =2a(2) =5a(3) =13a(4) =35a(5) =97a(6) =285a(7) =877a(8) =2834a(9) =9564a(10) =33627a(11) =122806a(12) =464672a(13) =1817558a(14) =7334633a(15) =30482068a(16) =130254931a(17) =571484549a(18) =2571058232a(19) =11846898542a(20) =55849085590a(21) =269103224044