A048082 Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= (n+3)/3.

0, 1, 2, 5, 9, 19, 34, 55, 125, 209, 329, 791, 1286, 2001, 5004, 8007, 12375, 31823, 50387, 77519, 203489, 319769, 490313, 1307503, 2042974, 3124549, 8436284, 13123109, 20030009, 54627299, 84672314, 129024479, 354817319

Offset

1,3

Links

Table of n, a(n) for n=1..33.

Crossrefs

Sequence in context: A265482 A085410 A073118 * A089089 A369854 A014495

Adjacent sequences: A048079 A048080 A048081 * A048083 A048084 A048085

Keyword

nonn

Author

Clark Kimberling

Status

approved