46681

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 86.at n=2A031674
• Primes of the form 16*m^2 + 25 for m=1,2,3,...at n=20A087857
• Upper twin primes of upper twin prime index.at n=29A088463
• Number of connected ordered 3-element multiantichains on a labeled n-set.at n=6A094730
• Augmentation of the triangular array |A123191|. See Comments.at n=50A193559
• Numbers of the form 5^j + 6^k, for j and k >= 0.at n=44A226814
• G.f.: Sum_{n>=1} x^n * (1+x)^n / (1-x^n).at n=22A227635
• Primes p such that p minus its digit sum is a perfect cube.at n=23A245064
• Primes of the form k^2 + 25.at n=46A346145
• E.g.f. A(x) satisfies A(x) = exp(x*B(x*A(x)^2)), where B(x) = 1 + x*B(x)^4 is the g.f. of A002293.at n=5A382031
• Prime numbersat n=4824