Assertion: triangle's number | /r/HasProperty | labeled in their notation
Facets:
value: as a 3,2
type: OTHER
Source sentences:
text: For instance, the number 3 in the middle of the third row of the triangle would be labeled, in their notation, as A 3,2 , and counts the number of partitions of {1, 2, 3, 4} in which 3 is the largest singleton element.