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A073076 Numbers k such that 2*k+1 divides C(2*k,k). 3
97, 136, 178, 192, 199, 292, 313, 332, 448, 467, 472, 478, 487, 535, 542, 577, 604, 617, 697, 773, 790, 797, 852, 885, 940, 962, 967, 997, 1017, 1045, 1096, 1127, 1147, 1165, 1182, 1202, 1237, 1291, 1292, 1319, 1332, 1339, 1345, 1354, 1368, 1397, 1414 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Integers k such that A056617(k) = 1. - Michel Marcus, May 27 2019

Numbers n such that A005408(n) divides A000984(n). - Felix Fröhlich, May 27 2019

LINKS

Michael De Vlieger, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range@ 1500, Mod[Binomial[2 #, #], 2 # + 1] == 0 &] (* Michael De Vlieger, May 27 2019 *)

PROG

(PARI) isok(n) = ! (binomial(2*n, n) % (2*n+1)); \\ Michel Marcus, Nov 28 2013

CROSSREFS

Cf. A000984, A005408, A056616, A056617, A080394.

Sequence in context: A161367 A216311 A258877 * A157213 A000923 A142528

Adjacent sequences:  A073073 A073074 A073075 * A073077 A073078 A073079

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Aug 17 2002

STATUS

approved

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Last modified August 20 02:24 EDT 2022. Contains 356231 sequences. (Running on oeis4.)