A116944 a(1) = 1; for n>1, a(n)=(a(n-1)+1)^n.

1, 4, 125, 252047376, 1017210679182495207444253709079169646680657

Offset

1,2

Comments

There was a conjecture that this recurrence would produce the sequence A068894, but this is not the case.

The next term -- a(6) -- has 253 digits. [From Harvey P. Dale, Jan 17 2012]

Links

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

Mathematica

RecurrenceTable[{a[1]==1, a[n]==(a[n-1]+1)^n}, a, {n, 6}] (* Harvey P. Dale, Jan 17 2012 *)

Crossrefs

Sequence in context: A354549 A286017 A068894 * A124260 A253099 A178842

Adjacent sequences: A116941 A116942 A116943 * A116945 A116946 A116947

Keyword

nonn

Author

Vim Wenders, Apr 18 2008

Status

approved