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 A249552 Numbers m such that there are precisely 9 groups of order m. 21
 308, 532, 644, 836, 868, 1316, 1364, 1652, 1748, 1815, 1876, 1892, 2068, 2212, 2324, 2356, 2596, 2852, 2884, 2996, 3124, 3268, 3476, 3572, 3652, 3668, 3892, 3956, 4228, 4263, 4484, 4532, 4564, 4676, 4708, 5012, 5092, 5332, 5348, 5396, 5428, 5572, 5588, 5764, 5828, 6004, 6116, 6164, 6244, 6308, 6356, 6532 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Muniru A Asiru and Jorge R. F. F. Lopes, Table of n, a(n) for n = 1..456 Max Horn, Numbers of isomorphism types of finite groups of given order Index entries for sequences related to groups MAPLE select(t -> GroupTheory:-NumAbelianGroups(t) <= 9 and GroupTheory:-NumGroups(t) = 9, [\$1..10000]); # Robert Israel, Mar 26 2018 PROG (GAP) A249552:=Filtered([1..2015], n->NumberSmallGroups(n)=9); # Muniru A Asiru, Nov 17 2017 CROSSREFS Cf. A000001. Cyclic numbers A003277. Numbers m such that there are precisely k groups of order m: A054395 (k=2), A055561 (k=3), A054396 (k=4), A054397 (k=5), A135850 (k=6), A249550 (k=7), A249551 (k=8), this sequence (k=9), A249553 (k=10), A249554 (k=11), A249555 (k=12), A292896 (k=13), A294155 (k=14), A294156 (k=15), A295161 (k=16), A294949 (k=17), A298909 (k=18), A298910 (k=19), A298911 (k=20). Sequence in context: A309566 A118843 A224675 * A237457 A234211 A053172 Adjacent sequences: A249549 A249550 A249551 * A249553 A249554 A249555 KEYWORD nonn AUTHOR N. J. A. Sloane, Nov 01 2014 EXTENSIONS a(13)-a(16) from Muniru A Asiru, Oct 21 2017 More terms from Muniru A Asiru, Oct 23 2017 More terms from Muniru A Asiru, Nov 17 2017 Incorrect b-file shortened by Jorge R. F. F. Lopes, Jan 07 2022 STATUS approved

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Last modified September 13 03:07 EDT 2024. Contains 375857 sequences. (Running on oeis4.)