1,1
Cf. A053067, A053068. Mersenne primes: A000668.
Adjacent sequences: A133011 A133012 A133013 this_sequence A133015 A133016 A133017
Sequence in context: A092301 A059120 A013826 this_sequence A100407 A083250 A096086
easy,nonn,base
Omar E. Pol (info(AT)polprimos.com), Oct 19 2007
Search completed in 0.002 seconds