a(n) = A379597(n) - A381710(n).

Terms

a(0) =1a(1) =3a(2) =7a(3) =13a(4) =25a(5) =41a(6) =65a(7) =93a(8) =133a(9) =177a(10) =245a(11) =305a(12) =397a(13) =489a(14) =609a(15) =725a(16) =893a(17) =1029a(18) =1241a(19) =1425a(20) =1665a(21) =1889a(22) =2209a(23) =2457a(24) =2821a(25) =3145a(26) =3549a(27) =3913a(28) =4429a(29) =4805