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A301281
Numerator of proportion of the volume of a unit box in R^4 that can be filled by n disjoint symplectically embedded balls of equal radius.
1
1, 1, 2, 8, 9, 48, 224, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
OFFSET
1,3
LINKS
Felix Schlenk, Symplectic embedding problems, old and new, Bull. Amer. Math. Soc., 55 (2018), pp. 139-182.
EXAMPLE
1/2, 1, 2/3, 8/9, 9/10, 48/49, 224/225, 1, 1, 1, 1, 1, 1, 1, 1, ...
CROSSREFS
Cf. A301282 (denominators), A125846, A125847.
Sequence in context: A221049 A181476 A055678 * A091793 A350454 A109351
KEYWORD
nonn,frac,easy
AUTHOR
N. J. A. Sloane, Mar 20 2018
STATUS
approved