43717

Properties

Appears in sequences

• Greatest number having exactly n representations as ab+ac+bc with 1 <= a <= b <= c.at n=25A094380
• {a(4,n)}, where a(m,n) is as defined in sequence A110576.at n=8A110580
• Numbers k such that 21^k + 2 is prime.at n=12A138049
• Primes p such that continued fraction of (1 + sqrt(p))/2 has period 17 : primes in A146340.at n=38A146362
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (-1, 1, 1), (0, -1, 0), (1, 0, 0)}.at n=11A148241
• Smallest prime of rank n.at n=5A177854
• Denominators of lower primes-only best approximates (POBAs) to Pi; see Comments.at n=20A265809
• Denominators of primes-only best approximates (POBAs) to Pi; see Comments.at n=23A265813
• a(n) = n! [x^n] LW(T(x)), where T(x) = -W(-x) Euler's tree function, W(x) is the Lambert W function, and LW(x) = W(-W(x))/(-W(x)) (A340473).at n=6A340474
• Prime numbersat n=4554