Assertion: sequence's number | /r/HasProperty | f n
Facets:
value: equivalently
type: DEGREE
Source sentences:
text: The number of ancestors at each level, F n , is the number of female ancestors, which is F n−1 , plus the number of male ancestors, which is F n−2 .
text: Equivalently, the number of subsets S of {1, ..., n } without an odd number of consecutive integers is F n +1 .