1,1

a(n)=A000041(A000668(n)).

a(3)=6842 because the 3rd Mersenne prime is A000668(3)=31 and the partition number of 31 is A000041(31)=6842.

Adjacent sequences: A134804 A134805 A134806 this_sequence A134808 A134809 A134810

Sequence in context: A016066 A012848 A076046 this_sequence A004002 A078355 A107823

nonn

Omar E. Pol (info(AT)polprimos.com), Nov 13 2007