A101327 2^(2^(2^x-1)-1)-1 == M(M(M(x)))

0, 1, 127, 170141183460469231731687303715884105727

Offset

0,3

Comments

Triple Mersenne numbers.

Links

Table of n, a(n) for n=0..3.

Example

M(M(M(0)))=0
M(M(M(1)))=1
M(M(M(2)))=127
M(M(M(3)))=170141183460469231731687303715884105727

Prog

(PARI) for(x=0, 4, print(2^(2^(2^x-1)-1)-1))

Crossrefs

Sequence in context: A263165 A135982 A135983 * A368676 A035880 A010369

Adjacent sequences: A101324 A101325 A101326 * A101328 A101329 A101330

Keyword

nonn

Author

Jorge Coveiro, Dec 24 2004

Status

approved