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Search: id:A106553
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| A106553 |
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Semiprime + (largest integer obtained by concatenating its two divisors). |
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+0
1
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| 26, 38, 41, 62, 86, 65, 94, 233, 80, 239, 344, 251, 110, 257, 352, 278, 128, 368, 566, 376
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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First semiprime is 4; 4 is 2*2; 26=4+22.
Second semiprime is 6; 6 is 2*3 (23) or 3*2 (32); 38=6+32.
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Eighth semiprime is 22; 22 is 2*11 (211) or 11*2 (112); 233=22+211.
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CROSSREFS
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Adjacent sequences: A106550 A106551 A106552 this_sequence A106554 A106555 A106556
Sequence in context: A034096 A034106 A106551 this_sequence A045092 A039324 A043147
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KEYWORD
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base,easy,nonn
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AUTHOR
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Eric Angelini (eric.angelini(AT)kntv.be), May 09 2005
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