53615

Appears in sequences

• a(n) = a(n-1) + a(round(2*(n-1)/3)) + a(round((n-1)/3)) with a(1)=a(2)=1.at n=47A033499
• a(n) = 4*n^3 - 3*n^2 + 2*n - 1.at n=23A131464