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A002268
Dimensions of integral lattices that are irreducible modulo every prime (there may be missing terms!).
0
1, 8, 24, 248
OFFSET
1,2
REFERENCES
R. Gow, Even unimodular lattices ... J. Alg. 22 (1989), 510-519.
R. Gow, Unimodular integral lattices ... Bull. Lond. Math. Soc. 21 (1989), 257-262.
B. H. Gross, Groups over Z, Invent Math. 124 (1996) 263-279.
J. G. Thompson, A simple subgroup of E_8(3), in Finite Groups Sympos., ed. N Iwahori, Japan Soc. Promotion Science, Tokyo, 1976, pp. 113-116.
J. G. Thompson, Finite groups and integral lattices, J. Alg 38 (1976) 523-524.
CROSSREFS
Sequence in context: A052656 A094061 A182589 * A050893 A037025 A105063
KEYWORD
nonn,nice
STATUS
approved