87463

Appears in sequences

• Numbers n such that 10000000n+1, 10000000n+3, 10000000n+7, 10000000n+9 are all primes.at n=5A064966
• T(n, k) = k^n*U(n, (1/k + k)/2) + (n + 1)^(k - 1)*U(k - 1, (1/(n + 1) + n + 1)/2), where U(n,x) is the n-th Chebyshev polynomial of the second kind, square array read by antidiagonals (n >= 0, k >= 1).at n=46A173590
• T(n, k) = k^n*U(n, (1/k + k)/2) + (n + 1)^(k - 1)*U(k - 1, (1/(n + 1) + n + 1)/2), where U(n,x) is the n-th Chebyshev polynomial of the second kind, square array read by antidiagonals (n >= 0, k >= 1).at n=53A173590
• a(n) is the least k such that A076620(k) = n.at n=11A341803