12335900908domain: NAppears in sequencesNumbers k such that sec(k) decreases monotonically to 1 (or cos(k) increases to 1).at n=17A046955Numerators 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=31A325158