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 A272186 Numbers n such that Bernoulli number B_{n} has denominator 690. 27
 44, 484, 748, 2596, 2684, 3124, 4444, 4708, 6556, 6908, 7964, 8228, 9812, 9988, 11308, 11572, 11836, 11924, 12452, 13684, 13772, 13948, 14828, 15356, 15532, 16148, 16676, 16852, 17468, 17644, 18524, 19316, 19756, 20108, 20284, 20372, 21076, 22924, 23012, 24068, 24772, 25124, 25828, 26444 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 690 = 2 * 3 * 5 * 23. All terms are multiple of a(1) = 44. For these numbers Numerator(B_{n}) mod Denominator(B_{n}) = 637. LINKS Seiichi Manyama, Table of n, a(n) for n = 1..1000 EXAMPLE Bernoulli B_{44} is -27833269579301024235023/690, hence 44 is in the sequence. MAPLE with(numtheory): P:=proc(q, h) local n; for n from 2 by 2 to q do if denom(bernoulli(n))=h then print(n); fi; od; end: P(10^6, 690); PROG (PARI) isok(n) = denominator(bernfrac(n)) == 690; \\ Michel Marcus, Apr 22 2016 CROSSREFS Cf. A045979, A051222, A051225, A051226, A051227, A051228, A051229, A051230, A119456, A119480, A249134, A255684, A271634, A271635, A272138, A272139, A272140, A272183, A272184, A272185. Sequence in context: A306036 A160150 A210119 * A222514 A282645 A283541 Adjacent sequences: A272183 A272184 A272185 * A272187 A272188 A272189 KEYWORD nonn AUTHOR Paolo P. Lava, Apr 22 2016 EXTENSIONS a(9)-a(14) from Michel Marcus, Apr 22 2016 More terms from Altug Alkan, Apr 22 2016 STATUS approved

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Last modified May 21 08:56 EDT 2024. Contains 372733 sequences. (Running on oeis4.)