27560

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 83.at n=35A031581
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 83.at n=1A031761
• Positive numbers k such that (k+1)*(k+2)*(k+3)*(k+4)/(k+(k+1)+(k+2)+(k+3)+(k+4)) is an integer.at n=29A032795
• Multiplicity of highest weight (or singular) vectors associated with character chi_189 of Monster module.at n=39A034577
• a(n) = ceiling(a(n-1)*4/3), with a(1) = 1.at n=33A087192
• E.g.f. exp(x)*BesselI(1,4*x)/2.at n=8A098520
• a(n) = n*(n+1)*(3*n^2+n-1)/6.at n=15A103220
• The number of ordered ways to achieve a score of n in American football.at n=31A160993
• a(n) is the sum of all possible pairs of the first n primes.at n=24A162867
• Number of strings of numbers x(i=1..8) in 0..n with sum i*x(i)^4 equal to 8*n^4.at n=21A184852
• Number of 3-turn bishop's tours on an n X n board summed over all starting positions.at n=11A188778
• Second elementary symmetric function of the first n terms of (1,1,2,2,3,3,4,4,...).at n=28A203246
• Number of (w,x,y,z) with all terms in {1,...,n} and w<x+y+z.at n=13A212090
• Number of compositions of n, where the difference between the number of odd parts and the number of even parts is 8.at n=12A242506
• Number of numbers whose base-4/3 expansion (see A024631) has n digits.at n=33A245356
• Triangle read by rows, T(n,k) = 2^k*GegenbauerC(k,-n,-1/4), for n>=0 and 0<=k<=n.at n=43A272868
• Triangle read by rows: T(n,k) = number of colored weighted Motzkin paths ending at (n,k).at n=37A293171
• Number of chiral pairs of color patterns (set partitions) in a cycle of length n using exactly 3 colors (subsets).at n=13A320643
• Number of cyclic change-ringing sequences of length n for 4 bells.at n=14A324942
• a(n) is the smallest possible side x in a family of triangles with integer sides x, y < x, x-y < z < x+y, such that exactly n pairs of triangles with equal area exist in this family.at n=48A375748