50420

Appears in sequences

• Values of n for which pi_{4,3}(p_n) - pi_{4,1}(p_n) = -1, where p_n is the n-th prime and pi_{m,a}(x) is the number of primes <= x which are congruent to a (mod m).at n=7A051024
• Numbers k such that k^6 == 1 (mod 7^5).at n=17A056103
• a(n) is the smallest integer k such that floor((3/2)^k)/floor((3/2)^n) is an integer greater than 1.at n=29A065644
• a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 42.at n=2A093242
• a(n) = n * (6*n^2 + 6*n + 1).at n=19A094421
• Integers k for which {prime(1), prime(2), ..., prime(k)} (mod 4) is biased towards 1.at n=20A096628
• Numbers of the form i*7^j-1 (i=1..6, j >= 0).at n=32A181303
• a(n) = 3*7^n-1.at n=5A198647
• Expansion of Product_{k>=1} (1 + 4*x^k).at n=24A261568