20105

Appears in sequences

• Numbers k such that (10^k - 1) - 4*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).at n=5A077786
• Indices of maximal gaps between consecutive nontrivial zeros of the Riemann zeta function.at n=18A208436
• Number of (n+3)X(2+3) 0..1 arrays with each row and column divisible by 15, read as a binary number with top and left being the most significant bits.at n=10A262451
• Expansion of 1/(1 - x/(1 - 49*x^7)^(1/7)).at n=23A373511