-527

Appears in sequences

• Real part of (1 + 2*i)^n, where i is sqrt(-1).at n=8A006495
• a(n) = bin_prime_sum(fibonacci(A001651[n])), where fibonacci(A001651[n]) is A014437[n].at n=61A059878
• a(n) = 5^n*cos(2*n*arctan(1/2)) or denominator of tan(2*n*arctan(1/2)).at n=4A066771
• Expansion of 1/(1+x+2*x^3).at n=13A077974
• a(n) = (n+1)*(2-n)/2.at n=33A080956
• Consider the triangle in which the n-th row starts with n, contains n terms and the difference of successive terms is 1,2,3,... up to n-1. Sequence gives row sums.at n=16A081498
• a(n) = M(n!), the value of Mertens's function at the n-th factorial.at n=11A087989
• Coefficients of numerator polynomials of g.f.s for a certain necklace problem involving prime numbers.at n=44A103728
• Coefficients of numerator polynomials of g.f.s for a certain necklace problem involving prime numbers.at n=54A103728
• Real part of (1 + 2i)^(2^n) where i is sqrt(-1).at n=3A120905
• Numerator of real part of (3*i - 1)^(-n).at n=8A124869
• a(n) = -n^2 + 9*n + 53.at n=29A126665
• a(n) = 13 + 12*n - n^2.at n=30A136316
• Real part of (2 + i)^n, where i = sqrt(-1).at n=8A139011
• Real part of (4 + 3i)^n.at n=4A139030
• Expansion of (1-5*x-x^2+x^3)/((1+x)*(1-x)^3).at n=22A141354
• Triangle T(n,k) read by rows: the real part of the coefficient [x^k] of (1-x)^(n+1) * Sum_{s>=0} ((2*s + 1 + 2*i)^n)*x^s, where i is the imaginary unit.at n=36A179087
• Triangle T(n,k) read by rows: the real part of the coefficient [x^k] of (1-x)^(n+1) * Sum_{s>=0} ((2*s + 1 + 2*i)^n)*x^s, where i is the imaginary unit.at n=44A179087
• a(n)=1-4*n-4*n^2.at n=11A184882
• Diagonal sums of number triangle A185962.at n=30A185964