50897

Appears in sequences

• Expansion of 1/(1 - x^2 - x^3 - x^4) = 1/((1 + x)*(1 - x - x^3)).at n=31A013979
• Dying rabbits: a(n) = a(n-1) + a(n-2) - a(n-5).at n=29A023435
• Numbers k such that (10^k - 1) - 5*10^floor(m/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).at n=6A077782
• Expansion of (1-x)^(-1)/(1-x-2*x^2-x^3).at n=14A077864
• Expansion of g.f.: (1-x^2-x^3)/( (1+x)*(1-x-x^3) ).at n=35A107458
• Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly one way, and new values 0..1 introduced in row major order.at n=6A204487
• Number of (n+2)X9 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly one way, and new values 0..1 introduced in row major order.at n=2A204491
• k such that 0 = Sum_{j=1..k} A373223(k, j). The indices of the rows in Gauss's triangle with vanishing row sums.at n=32A373181