The prime factorization of abs(numerator(B(2k))) for k >= 5, B(k) the k-th Bernoulli number. Factors sorted by size with the smallest factor negated. a(n) = -1 by convention for 1 <= n <= 5.
A326727
The prime factorization of abs(numerator(B(2k))) for k >= 5, B(k) the k-th Bernoulli number. Factors sorted by size with the smallest factor negated. a(n) = -1 by convention for 1 <= n <= 5.
Terms
- a(0) =-1a(1) =-1a(2) =-1a(3) =-1a(4) =-1a(5) =-5a(6) =-691a(7) =-7a(8) =-3617a(9) =-43867a(10) =-283a(11) =617a(12) =-11a(13) =131a(14) =593a(15) =-103a(16) =2294797a(17) =-13a(18) =657931a(19) =-7a(20) =9349a(21) =362903a(22) =-5a(23) =1721a(24) =1001259881a(25) =-37a(26) =683a(27) =305065927a(28) =-17a(29) =151628697551
External references
- oeis: A326727