52174

Appears in sequences

• a(n) = least k such that tan(k) < tan(a(n-1)), for n >= 1, with a(0) = 0.at n=5A024815
• Least positive integer multiples of angle x such that their direction cosines form a unit vector: Sum_{k>0} cos(a(k)*x)^2 = 1, where a(1)=1 and x=1.at n=20A080136
• Least positive integer multiples of angle x such that their direction cosines form a unit vector: Sum_{k>0} cos(a(k)*x)^2 = 1, where a(1)=1, a(n+1)>a(n) and x=3-Pi/2.at n=26A080139
• Numerators of convergents to Pi/2.at n=7A096456
• (Numerator of n-th convergent to Pi having an even numerator)/2.at n=1A102367
• Number of compositions of n having exactly eight fixed points.at n=15A240743
• Number of hands of n points in Spanish dominoes.at n=22A258064
• Number of hands of n points in Spanish dominoes.at n=32A258064
• Even composite integers m such that A006190(m)^2 == 1 (mod m).at n=10A337235
• Numbers k for which sec(k) > k.at n=2A337248
• a(n) is the smallest integer k > 0 such that 10^(-n-1) < |sin(k) - round(sin(k))| < 10^(-n).at n=10A346033
• Centered triangular numbers which are products of three distinct primes.at n=26A359624
• Positive numbers k such that abs((sin k)^k) sets a new record.at n=5A382815
• Positive numbers k such that (sin k)^k sets a new record.at n=14A383540