OFFSET
1,4
COMMENTS
The Heinz number of an integer partition (y_1, ..., y_k) is prime(y_1) * ... * prime(y_k).
LINKS
EXAMPLE
The sum of coefficients of p(211) = -f(4) - 2f(22) - 2f(31) - 2f(211) is a(12) = -7.
CROSSREFS
KEYWORD
sign,more
AUTHOR
Gus Wiseman, Nov 20 2018
STATUS
approved