Pseudoprimes to bases 2 and 7.

Terms

a(0) =561a(1) =1105a(2) =2465a(3) =3277a(4) =8321a(5) =10585a(6) =18721a(7) =29341a(8) =46657a(9) =62745a(10) =75361a(11) =104653a(12) =115921a(13) =162401a(14) =219781a(15) =226801a(16) =252601a(17) =278545a(18) =294409a(19) =314821a(20) =334153a(21) =340561a(22) =399001a(23) =410041a(24) =449065a(25) =488881a(26) =512461a(27) =530881a(28) =534061a(29) =552721