OFFSET
0,12
COMMENTS
Number of partitions of n into primes with prime subscripts.
LINKS
N. J. A. Sloane, Transforms
Eric Weisstein's World of Mathematics, Prime Partition
FORMULA
EXAMPLE
a(11) = 2 because we have [3,3,5] and [11], where 3 = prime(2) = prime(prime(1)), 5 = prime(3) = prime(prime(2)) and 11 = prime(5) = prime(prime(3)).
MATHEMATICA
nmax=90; CoefficientList[Series[1/Product[1 - x^Prime[Prime[k]], {k, 1, nmax}], {x, 0, nmax}], x]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Ilya Gutkovskiy, Nov 30 2016
STATUS
approved