OFFSET
1,2
COMMENTS
The Heinz number of an integer partition (y_1,...,y_k) is prime(y_1)*...*prime(y_k).
EXAMPLE
Triangle of partitions into odd parts begins:
0
(1)
(11)
(3) (111)
(31) (1111)
(5) (311) (11111)
(51) (33) (3111) (111111)
(7) (511) (331) (31111) (1111111)
(71) (53) (5111) (3311) (311111) (11111111)
MATHEMATICA
Table[Sort[Times@@Prime/@#&/@Select[IntegerPartitions[n], And@@OddQ/@#&]], {n, 0, 12}]
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Gus Wiseman, Mar 03 2018
STATUS
approved