Duplicate of A024377.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =16a(5) =20a(6) =35a(7) =43a(8) =53a(9) =65a(10) =86a(11) =106a(12) =137a(13) =153a(14) =196a(15) =220a(16) =246a(17) =270a(18) =329a(19) =353a(20) =412a(21) =454a(22) =521a(23) =559a(24) =642a(25) =686a(26) =732a(27) =780a(28) =869a(29) =917