A175980 a(1) = 1, for n >= 2: a(n) = a(n-1)^n + 1.

1, 2, 9, 6562, 12166933384727052833

Offset

1,2

Comments

a(6) has 115 digits.

Links

Table of n, a(n) for n=1..5.

Example

For n = 4: a(4) = 9^4 + 1 = 6562.

Mathematica

RecurrenceTable[{a[1]==1, a[n]==a[n-1]^n+1}, a, {n, 6}] (* Harvey P. Dale, Nov 02 2019 *)

Crossrefs

Sequence in context: A067039 A208214 A280256 * A296654 A027734 A328201

Adjacent sequences: A175977 A175978 A175979 * A175981 A175982 A175983

Keyword

nonn

Author

Jaroslav Krizek, Nov 03 2010

Status

approved