42287

Appears in sequences

• Fermat coefficients.at n=10A000972
• a(n) = floor(C(n,6)/7).at n=27A011797
• T(n,7), array T as in A051168; a count of Lyndon words; aperiodic necklaces with 7 black beads and n-7 white beads.at n=21A051172
• a(n) = (1/(4*n)) * Sum_{d|n} mu(n/d) * binomial(4*d,d).at n=6A346578
• Number of binary strings of length n that contain the substring 1000.at n=16A373046