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A303852
Number of pairs (lambda,mu) of partitions lambda of n and mu of ceiling(n/2) with mu <= lambda (by diagram containment).
4
1, 1, 2, 4, 8, 13, 23, 42, 70, 114, 178, 313, 479, 759, 1119, 1858, 2687, 4207, 5960, 9468, 13203, 20198, 27728, 42955, 58293, 87333, 117084, 176706, 234579, 346450, 455637, 673619, 878603, 1276936, 1652382, 2404288, 3089769, 4429895, 5654741, 8105634
OFFSET
0,3
LINKS
Eric Weisstein's World of Mathematics, Ferrers Diagram
Wikipedia, Ferrers diagram
FORMULA
a(n) = A259478(n,ceiling(n/2)).
CROSSREFS
Bisections give: A303861 (even part), A303863 (odd part).
Cf. A259478.
Sequence in context: A258600 A227232 A164408 * A096573 A348574 A227910
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 01 2018
STATUS
approved