Numbers k such that at least one of k and k+2 is composite, while for every b coprime to k*(k+2), b^(k-1) == 1 (mod k) and b^(k+1) == 1 (mod k+2).
A194231
Numbers k such that at least one of k and k+2 is composite, while for every b coprime to k*(k+2), b^(k-1) == 1 (mod k) and b^(k+1) == 1 (mod k+2).
Terms
- a(0) =561a(1) =1103a(2) =2465a(3) =2819a(4) =6599a(5) =29339a(6) =41039a(7) =52631a(8) =62743a(9) =172079a(10) =188459a(11) =278543a(12) =340559a(13) =488879a(14) =656599a(15) =656601a(16) =670031a(17) =1033667a(18) =1909001a(19) =2100899a(20) =3146219a(21) =5048999a(22) =6049679a(23) =8719307a(24) =10024559a(25) =10402559a(26) =10877579a(27) =11119103a(28) =12261059a(29) =14913989
External references
- oeis: A194231