1431261

Appears in sequences

• a(1)=1, a(n)=a(n-1)+n^2 if n odd, a(n)=a(n-1)+ n^4 if n is even.at n=25A140150
• a(n) = Sum_{k=0..floor(n/3)} n^k * |Stirling1(n,3*k)|.at n=9A356361