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Search: id:A073647
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A073647 In decimal representation of n, replace composite digits (4, 6, 8 and 9) by their concatenated prime factorizations (22, 23, 222 and 33). +0
1
1, 2, 3, 22, 5, 23, 7, 222, 33, 10, 11, 12, 13, 122, 15, 123, 17, 1222, 133, 20, 21, 22, 23, 222, 25, 223, 27, 2222, 233, 30, 31, 32, 33, 322, 35, 323, 37, 3222, 333, 220, 221, 222, 223, 2222, 225, 2223, 227, 22222, 2233, 50, 51, 52, 53, 522, 55, 523, 57, 5222, 533 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A114749 A141458 A080670 this_sequence A073646 A109671 A037276

Adjacent sequences: A073644 A073645 A073646 this_sequence A073648 A073649 A073650

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 29 2002

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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