Positive integers of the form (2*m^2+1)/11.

Terms

a(0) =3a(1) =9a(2) =41a(3) =59a(4) =123a(5) =153a(6) =249a(7) =291a(8) =419a(9) =473a(10) =633a(11) =699a(12) =891a(13) =969a(14) =1193a(15) =1283a(16) =1539a(17) =1641a(18) =1929a(19) =2043a(20) =2363a(21) =2489a(22) =2841a(23) =2979a(24) =3363a(25) =3513a(26) =3929a(27) =4091a(28) =4539a(29) =4713