75444

Appears in sequences

• Euler transform of 1, 5, 9, 13, 17, 21, 25, 29, 33, ... (A016813).at n=12A137806
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=16A291843
• Column 1 of triangle A291843.at n=4A294167
• a(n) = (1/4) * Sum_{k=0..floor(n/3)} (n-2*k+2) * binomial(2*n-4*k+2,2*k+1).at n=13A391831