Least k such that n^k mod k = n + 1.

Terms

a(0) =4700063497a(1) =41459a(2) =6821a(3) =15853a(4) =121129a(5) =535a(6) =36196439a(7) =3827a(9) =8153a(10) =20395a(11) =5805311a(12) =93929a(13) =3736136819a(14) =1343851a(15) =7099195a(16) =319a(17) =559a(18) =96641237093a(19) =5053a(20) =1535a(21) =280517a(22) =148731221a(23) =869a(24) =2062919a(25) =17473a(26) =803a(27) =39259