28056
domain: N
Appears in sequences
- Product of a prime and the following number.at n=38A036690
- T(n,n-3), array T as in A047030.at n=8A047035
- Integers n > 10563 such that the 'Reverse and Add!' trajectory of n joins the trajectory of 10563.at n=24A063064
- a(n) = number of conjugacy classes in PSL_3(prime(n)).at n=38A124679
- Exponential Riordan array [e^(x/(1-x)),x].at n=39A129652
- Numbers k such that k^2 divides 2*Fibonacci(k).at n=9A130163
- a(n) = least m such that sum of m reciprocal primes starting with n-th prime is >1.at n=25A137368
- a(n) = 1728*n - 1320.at n=16A157263
- a(n) = 25*n^2 + 25*n + 6.at n=33A177059
- Augmentation of the triangle A193592. See Comments.at n=41A193593
- Number of rooted 2-regular labeled graphs on n nodes.at n=8A211774
- a(n) = Sum_{i=0..n} Sum_{j=0..n} (i XOR j), where XOR is the binary logical exclusive-or operator.at n=35A224923
- Index of the smallest Fibonacci number divisible by prime(n)^2.at n=38A264008
- Maximum number of 6 sphinx tile shapes in a sphinx tiled hexagon of order n.at n=27A291582
- a(n) is the number of canonical polygons with n edges having exactly 1 line of reflection symmetry.at n=18A307455
- Denominator of the limiting density of residues attained by the Fibonacci sequence modulo powers of the n-th prime.at n=38A351000