74377

Properties

Appears in sequences

• Number of equivalence classes of 4 X n binary matrices when one can permute rows, permute columns and complement columns.at n=22A006380
• Primes having only {3, 4, 7} as digits.at n=43A199347
• The smallest A(m) such that the interval (A(m)*n, A(m+1)*n) contains exactly one element of A, where A is the sequence of primes p for which p-2 is not prime.at n=19A201828
• Primes that remain prime when a single digit 7 is inserted between any two consecutive digits or as the leading or trailing digit.at n=26A215420
• Primes p such that q1=6*p-1 and q2=6*p+1 are also primes (twin primes) and q1 is a Sophie Germain prime (i.e., 2*q1+1 is prime).at n=40A358381
• Numbers k such that the continued fraction for sqrt(k) has period 365.at n=3A378955
• Expansion of e.g.f. exp(sinh(3*x) / 3).at n=8A381277
• Prime numbersat n=7337