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Search: id:A107835
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| A107835 |
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Slowest increasing sequence where a(n)-(first digit of a(n)) is prime. |
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+0
2
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| 12, 14, 18, 21, 25, 32, 34, 41, 45, 47, 52, 58, 65, 67, 74, 78, 81, 87, 92, 98, 102, 104, 108, 110, 114, 128, 132, 138, 140, 150, 152, 158, 164, 168, 174, 180, 182, 192, 194, 198, 201, 213, 225, 229, 231, 235, 241, 243, 253, 259, 265, 271, 273, 279, 283, 285
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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(12)-1=11, which is prime; (14)-1=13=prime, (18)-1=17=prime;
(25)-2=23=prime; etc.
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MATHEMATICA
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Select[ Range[300], PrimeQ[ # - IntegerDigits[ # ][[1]]] &] (from Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 14 2005)
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CROSSREFS
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Cf. A107836.
Sequence in context: A135770 A091989 A078417 this_sequence A101557 A019292 A022326
Adjacent sequences: A107832 A107833 A107834 this_sequence A107836 A107837 A107838
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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), Jun 11 2005
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EXTENSIONS
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Edited, corrected and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 14 2005
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