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A046116 Numbers n such that no Paley-type Hadamard matrix of order n exists. 1
92, 116, 156, 172, 184, 188, 232, 236, 260, 268, 292, 324, 356, 372, 376, 404, 412, 428, 436, 452, 472, 476, 508, 520, 532, 536, 584, 596, 604, 612, 652, 668, 712, 716, 732, 756, 764, 772, 808, 836, 852, 856, 872, 876, 892, 904, 932, 940, 944, 952, 956 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..51.

Joerg Arndt, Matters Computational (The Fxtbook)

Eric Weisstein's World of Mathematics, More info (1)

Eric Weisstein's World of Mathematics, More info (2)

FORMULA

Divisible by 4 but not of form 2^a*(q+1), q = odd prime power.

CROSSREFS

Sequence in context: A252075 A065511 A252068 * A273286 A257761 A252067

Adjacent sequences:  A046113 A046114 A046115 * A046117 A046118 A046119

KEYWORD

nonn

AUTHOR

Eric W. Weisstein

STATUS

approved

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Last modified April 23 07:51 EDT 2019. Contains 322381 sequences. (Running on oeis4.)