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A048035
Number of nonempty subsets of {1,2,...,n} in which exactly 4/5 of the elements are <= (n-3)/3.
0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 12, 13, 65, 70, 75, 225, 240, 255, 595, 630, 665, 1501, 1590, 1680, 4536, 4851, 5175, 16215, 17460, 18750, 57750, 62205, 66825, 190035, 204246, 218979, 590759, 634075, 679055, 1836471
OFFSET
1,15
CROSSREFS
Sequence in context: A031300 A111019 A306583 * A048015 A061082 A231870
KEYWORD
nonn
STATUS
approved