For p = prime(n), a(n) is the smallest base-2 pseudoprime N (that is, 2^(N-1) = 1 mod N) such that p divides N.

A085999

For p = prime(n), a(n) is the smallest base-2 pseudoprime N (that is, 2^(N-1) = 1 mod N) such that p divides N.

Terms

    a(0) =561a(1) =645a(2) =1729a(3) =341a(4) =1105a(5) =561a(6) =1387a(7) =2047a(8) =2465a(9) =341a(10) =2701a(11) =6601a(12) =645a(13) =4371a(14) =8321a(15) =13747a(16) =29341a(17) =8911a(18) =19951a(19) =1387a(20) =30889a(21) =88561a(22) =2047a(23) =18721a(24) =60701a(25) =31621a(26) =680627a(27) =4033a(28) =3277a(29) =1905

External references