OFFSET
1,13
COMMENTS
The Heinz number of an integer partition (y_1, ..., y_k) is prime(y_1) * ... * prime(y_k).
LINKS
EXAMPLE
Tetrangle begins (zeroes not shown):
(1): 1
.
(2): 1
(11): 1 1
.
(3): 1
(21): 1 1
(111): 1 2 1
.
(4): 1
(22): 1 1 1
(31): 1 1
(211): 1 1 2 1
(1111): 1 2 3 3 1
.
(5): 1
(41): 1 1
(32): 1 1 1
(221): 1 2 1 2 1
(311): 1 1 2 1
(2111): 1 2 3 3 3 1
(11111): 1 4 5 5 6 4 1
For example, row 14 gives: e(32) = s(221) + s(2111) + s(11111).
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Gus Wiseman, Nov 22 2018
STATUS
approved