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A048093 Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= sqrt(n). 2
0, 1, 2, 5, 9, 14, 20, 27, 83, 119, 164, 219, 285, 363, 454, 1819, 2379, 3059, 3875, 4844, 5984, 7314, 8854, 10625, 53129, 65779, 80729, 98279, 118754, 142505, 169910, 201375, 237335, 278255, 324631, 1947791, 2324783, 2760680 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..38.

CROSSREFS

Cf. A084919.

Sequence in context: A134189 A109470 A112873 * A024669 A006482 A191170

Adjacent sequences:  A048090 A048091 A048092 * A048094 A048095 A048096

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 11 17:33 EDT 2021. Contains 343805 sequences. (Running on oeis4.)