Row 3 of A007754.

Terms

a(0) =2a(1) =18a(2) =52a(3) =110a(4) =198a(5) =322a(6) =488a(7) =702a(8) =970a(9) =1298a(10) =1692a(11) =2158a(12) =2702a(13) =3330a(14) =4048a(15) =4862a(16) =5778a(17) =6802a(18) =7940a(19) =9198a(20) =10582a(21) =12098a(22) =13752a(23) =15550a(24) =17498a(25) =19602a(26) =21868a(27) =24302a(28) =26910a(29) =29698