39169

Appears in sequences

• Number of fixed 2-dimensional triangular-celled animals with n cells (n-iamonds, polyiamonds) in the 2-dimensional hexagonal lattice.at n=11A001420
• Number of 1's in n-th term of A006711.at n=39A022477
• Smallest number k such that n! + k is a square.at n=11A068869
• Indices of primes in sequence defined by A(0) = 67, A(n) = 10*A(n-1) - 23 for n > 0.at n=21A101529
• sigma(n) + n is a fourth power.at n=5A114071
• Expansion of x/(1 - x - 2*x^3 - 2*x^5 - x^7).at n=19A143373
• a(n) = 68*n^2 + 1.at n=24A158732
• Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having one, two, three, four, five or six distinct values for every i,j,k<=n.at n=5A211736
• Least number k >= 0 such that n! + k is a perfect power.at n=11A240939
• G.f. A(x) satisfies: A(x) = x * exp(Sum_{k>=1} (A(x^k) + sigma_2(k)*x^k)/k).at n=10A307976
• Odd composite integers m such that U(m)^2 == 1 (mod m) and V(m) == 6 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=6 and b=-1, respectively.at n=30A337629
• Odd composite integers m such that A085447(m) == 6 (mod m).at n=40A338078