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A006984 Greatest minimal norm of sublattice of index n in hexagonal lattice.
(Formerly M2298)
+0
3
1, 1, 3, 4, 3, 4, 7, 7, 9, 7, 7, 12, 13, 12, 13, 16, 13, 13, 19, 16, 21, 19, 19, 21, 25, 21, 27, 28, 21, 27, 31, 28, 27, 28, 31, 36, 37, 31, 39, 37, 37, 36, 43, 39, 39, 39, 39, 48, 49, 43, 43 (list; graph; listen)
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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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