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A101327
2^(2^(2^x-1)-1)-1 == M(M(M(x)))
0
0, 1, 127, 170141183460469231731687303715884105727
OFFSET
0,3
COMMENTS
Triple Mersenne numbers.
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
KEYWORD
nonn
AUTHOR
Jorge Coveiro, Dec 24 2004
STATUS
approved