1,1

Mersenne primes are solutions to sigma(n+1)-sigma(n)=n. Conjecture: sequence gives even values only.

Adjacent sequences: A067800 A067801 A067802 this_sequence A067804 A067805 A067806

Sequence in context: A031701 A098257 A048055 this_sequence A098258 A077085 A067723

nonn,bref

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 07 2002