143883

Appears in sequences

• a(n) = G_n(5), where G_n(k) is the Goodstein function defined in A266201.at n=34A266204
• a(n) = 2*a(n-1)-2*a(n-2)+a(n-3)+2*a(n-4) with a(0)=a(1)=0, a(2)=2, a(3)=3.at n=27A307688