%I #4 Jan 01 2022 11:46:36
%S 3,15,6842,3913864295
%N Partition numbers of Mersenne primes.
%C The next term -- a(5) -- has 97 digits. - _Harvey P. Dale_, Jan 01 2022
%F a(n)=A000041(A000668(n)).
%e a(3)=6842 because the 3rd Mersenne prime is A000668(3)=31 and the partition number of 31 is A000041(31)=6842.
%t Table[PartitionsP[2^MersennePrimeExponent[n]-1],{n,5}] (* _Harvey P. Dale_, Jan 01 2022 *)
%K nonn
%O 1,1
%A _Omar E. Pol_, Nov 13 2007