34445

Appears in sequences

• Determinant of the (p_n-1)/2 X (p_n-1)/2 matrix with (i,j)-entry being the Legendre symbol((i^2+j^2)/p_n), where p_n is the n-th prime.at n=8A227609
• Nonprime numbers k such that the sum of the divisors of k^2 is of the form m^2 + m + 1.at n=34A289385
• Rectangular array R by antidiagonals: row n shows the positive integers whose base-3 digits have up-variation n, for n>=0. See Comments.at n=54A297442
• a(n) = a(n-1) + 9*a(n-2) - 9*a(n-3), where a(0) = 1, a(1) = 5, a(2) = 11.at n=9A297445
• Numbers k such that sigma(k) = psi(k) + tau(k).at n=41A387953
• a(n) = (3^n + 2*n*3^(n-1) - 1)/4.at n=9A392266