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A135209 D'Agapeyeff cipher. 1
75628, 28591, 62916, 48164, 91748, 58464, 74748, 28483, 81638, 18174, 74826, 26475, 83828, 49175, 74658, 37575, 75936, 36565, 81638, 17585, 75756, 46282, 92857, 46382, 75748, 38165, 81848, 56485, 64858, 56382, 72628, 36281, 81728 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The D'Agapeyeff cipher is an as-yet unbroken cipher that appears in the first edition of Codes and Ciphers, an elementary book on cryptography published by the Russian-born English cartographer Alexander D'Agapeyeff in 1939

LINKS

_Paolo P. Lava_ and _Giorgio Balzarotti_, Dec 05 2007, Table of n, a(n) for n = 0..78

American Cryptogram Association, Discussion of possible causes of failure to solve D'Agapeyeff cipher

Robert Matthews, Description of properties and potential decryption strategies for D'Agapeyeff cipher

CROSSREFS

Cf. A101110, A101111, A101112.

Sequence in context: A236817 A140940 A204865 * A243959 A236807 A091294

Adjacent sequences:  A135206 A135207 A135208 * A135210 A135211 A135212

KEYWORD

easy,nonn

AUTHOR

Paolo P. Lava and Giorgio Balzarotti, Dec 05 2007

STATUS

approved

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Last modified November 23 22:48 EST 2014. Contains 249866 sequences.