811528438

Appears in sequences

• Apart from two leading terms (which are present by convention), denominators of convergents to Pi (A002485 and A046947 give numerators).at n=19A002486
• Denominator of best approximation to Pi with denominator <= 10^n.at n=9A072399
• Denominators of convergents to Pi using best rational approximation whose denominator is between consecutive powers of 2: [2^n, 2^(n+1)-1], where n = 0, 1, 2, ...at n=29A325159
• Numbers k such that ceiling(Pi/arctan(1/k)) = ceiling(k*Pi)+1.at n=33A332045
• Denominators of approximations j/k for Pi such that abs(j/k - Pi)*sqrt(5)*k^2 < 1.at n=22A346534
• a(n) is the denominator of the rational number with the smallest denominator that lies within 1/10^n of Pi.at n=18A360367
• Intersection of A002486 and A360367.at n=12A360370