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 A001228 Orders of sporadic simple groups. 18
 7920, 95040, 175560, 443520, 604800, 10200960, 44352000, 50232960, 244823040, 898128000, 4030387200, 145926144000, 448345497600, 460815505920, 495766656000, 42305421312000, 64561751654400, 273030912000000, 51765179004000000, 90745943887872000, 4089470473293004800, 4157776806543360000, 86775571046077562880, 1255205709190661721292800, 4154781481226426191177580544000000, 808017424794512875886459904961710757005754368000000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers of divisors: A174601(n) = A000005(a(n)); squarefree kernels: A174848(n) = A007947(a(n)). - Reinhard Zumkeller, Apr 02 2010 REFERENCES J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, ATLAS of Finite Groups. Oxford Univ. Press, 1985. J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 296. Martin Gardner, "The Last Recreations", 1997, chap 9, p. 153. LINKS David Madore, Table of sporadic simple groups. Eric Weisstein's World of Mathematics, Sporadic Group EXAMPLE The first term is 7920 because the order of the sporadic group M_{11} is 7920, the smallest order of any sporadic group. CROSSREFS Cf. A001034, A005180. Sequence in context: A031922 A121236 A233976 * A036325 A031677 A031587 Adjacent sequences:  A001225 A001226 A001227 * A001229 A001230 A001231 KEYWORD nonn,fini,nice,full AUTHOR EXTENSIONS Entries checked by Pab Ter (pabrlos(AT)yahoo.com), May 29 2004 STATUS approved

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Last modified September 22 15:16 EDT 2018. Contains 315270 sequences. (Running on oeis4.)