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Search: id:A090009
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| A090009 |
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Begins the earliest length-n chain of primes such that any term in the chain equals the previous term increased by the sum of its digits. |
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+0
1
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OFFSET
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1,1
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EXAMPLE
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11 begins the earliest chain 11, 13, 17 of three primes such that any term in the chain equals the previous term increased by the sum of its digits, viz., 13 = 11 + 2, 17 = 13 + 4. Hence a(3) = 11.
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CROSSREFS
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Adjacent sequences: A090006 A090007 A090008 this_sequence A090010 A090011 A090012
Sequence in context: A086862 A027828 A106371 this_sequence A068225 A043080 A108199
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KEYWORD
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base,more,nonn
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AUTHOR
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Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 27 2004
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