1001259881

Appears in sequences

• Prime factors of |numerator(B(2n))| which are >= 2n+3.at n=13A046753
• Largest prime factor of numerator of Bernoulli(2n) (or 1 if the numerator is 1).at n=15A090947
• Irregular pairs (p,2k) ordered by increasing k.at n=26A189683
• The largest prime divisor of A246053(n).at n=15A240978
• Greatest prime factor of |A001067(n)|, or 1 if |A001067(n)| = 1.at n=14A281332
• 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.at n=24A326727