A126333 Ackermann's function A(n,0).

1, 2, 3, 5, 13, 65533

Offset

0,2

Links

Table of n, a(n) for n=0..5.

R. G. Wilson v, Letter to N. J. A. Sloane, Nov. 1988

Formula

A(0,n)=1+n, A(m+1,0)=A(m,1), A(m+1;n+1)=A(m,A(m+1,n)).

Crossrefs

Cf. A014221, A001695.

Sequence in context: A115347 A173654 A370850 * A266192 A233082 A039575

Adjacent sequences: A126330 A126331 A126332 * A126334 A126335 A126336

Keyword

nonn

Author

Philippe LALLOUET (philip.lallouet(AT)wanadoo.fr), Mar 10 2007

Status

approved