Sixth column of A046741.

Terms

a(0) =8a(1) =114a(2) =667a(3) =2504a(4) =7191a(5) =17266a(6) =36482a(7) =70050a(8) =124882a(9) =209834a(10) =335949a(11) =516700a(12) =768233a(13) =1109610a(14) =1563052a(15) =2154182a(16) =2912268a(17) =3870466a(18) =5066063a(19) =6540720a(20) =8340715a(21) =10517186a(22) =13126374a(23) =16229866a(24) =19894838a(25) =24194298a(26) =29207329