Strong pseudoprimes to base 68.

Terms

a(0) =25a(1) =49a(2) =69a(3) =125a(4) =185a(5) =217a(6) =247a(7) =361a(8) =871a(9) =925a(10) =1273a(11) =1519a(12) =1771a(13) =2413a(14) =2725a(15) =4033a(16) =4625a(17) =4693a(18) =5713a(19) =11041a(20) =12403a(21) =12769a(22) =14981a(23) =15251a(24) =16549a(25) =21667a(26) =24187a(27) =26825a(28) =28221a(29) =31021