Conjectured smallest Sierpiński numbers of the second kind S, base b=2,3,4,5,..., where S*b^n+1 is composite for all n>=1 and gcd(S+1, b-1) = 1.

A123159

Conjectured smallest Sierpiński numbers of the second kind S, base b=2,3,4,5,..., where S*b^n+1 is composite for all n>=1 and gcd(S+1, b-1) = 1.

Terms

    a(0) =78557a(1) =125050976086a(2) =66741a(3) =159986a(4) =174308a(6) =1a(7) =2344a(8) =9175a(9) =1490a(10) =521a(11) =132a(12) =4a(14) =2500a(15) =278a(16) =398a(17) =765174a(18) =8a(19) =1002a(20) =6694a(21) =182a(22) =30651a(23) =262638a(24) =221a(25) =8a(26) =4554a(27) =4a(28) =867a(29) =6360528a(30) =1a(31) =1854

External references