A175986 a(1) = 1, for n >= 2: a(n) = (a(n-1)-1)^(n-1) - 1.

1, -1, 3, 7, 1295, 3628034278016223

Offset

1,3

Comments

a(7) has 94 digits.

Links

Table of n, a(n) for n=1..6.

Example

For n = 5: a(5) = (7-1)^4 - 1 = 1295.

Crossrefs

Sequence in context: A012844 A104052 A062625 * A296351 A349007 A101006

Adjacent sequences: A175983 A175984 A175985 * A175987 A175988 A175989

Keyword

sign

Author

Jaroslav Krizek, Nov 03 2010

Status

approved