OFFSET
1,1
EXAMPLE
For n = 3 the third prime number is 5; the partitions of 5 are [5], [4, 1], [3, 2], [3, 1, 1], [2, 2, 1], [2, 1, 1, 1], [1, 1, 1, 1, 1]; there are 20 parts, so a(3) = 20.
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Aug 11 2011
STATUS
approved