0,1

(2*3)-1=5, which is prime; (3*4)-1=11=prime; (4*5)-1=19=prime; (5*6)-1=29=prime, etc.

Sequence in context: A032903 A028819 A108948 this_sequence A039952 A129978 A033079

Adjacent sequences: A107815 A107816 A107817 this_sequence A107819 A107820 A107821

base,easy,nonn

Eric Angelini (eric.angelini(AT)kntv.be), Jun 11 2005