a(n) = m^^m mod 10^len(m), where m = A038399(n) and ^^ indicates tetration or hyper-4.

A371720

a(n) = m^^m mod 10^len(m), where m = A038399(n) and ^^ indicates tetration or hyper-4.

Terms

    a(0) =1a(1) =11a(2) =811a(3) =3811a(4) =63811a(5) =763811a(6) =3763811a(7) =5103763811a(8) =515103763811

External references