207464

Appears in sequences

• a(n) = Sum_{k=0..n} (k+1) * A026736(n,n-k).at n=14A027220
• Recursion based on Exp[Pi/4]: a(n)=Floor[a(n-1)*Exp[Pi/4]] Angular domain {0,Pi/4} is the smallest self-similar piece of a sine wave.at n=17A136671