40085

Appears in sequences

• Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 17.at n=32A051982
• Numbers k such that prime(k+1) == 1 (mod k).at n=16A105286
• Number of nX4 0..1 arrays with every element equal to 1, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero.at n=4A301611
• Number of nX5 0..1 arrays with every element equal to 1, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero.at n=3A301612
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero.at n=31A301615
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero.at n=32A301615
• Expansion of Product_{k>=1} 1/(1 - x^prime(k))^A056768(k).at n=42A321508