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A153777
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Sequence S such that 1 is in S and if x is in S, then 5x-1 and 5x+1 are in S.
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1, 4, 6, 19, 21, 29, 31, 94, 96, 104, 106, 144, 146, 154, 156, 469, 471, 479, 481, 519, 521, 529, 531, 719, 721, 729, 731, 769, 771, 779, 781, 2344, 2346, 2354, 2356, 2394, 2396, 2404, 2406, 2594, 2596, 2604, 2606, 2644, 2646, 2654, 2656, 3594, 3596, 3604
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Subsequences include A003463, A083065.
1st generation: 1
2nd generation: 4, 6
3rd generation: 19, 21, 29, 31
4th generation: 94, 96, 104, 106, 144, 146, 154, 156
Does every generation contain p or 2p for some prime p?
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CROSSREFS
| Cf. A003463, A083065, A153773, A153776.
Sequence in context: A196570 A012928 A013160 * A034189 A024697 A024874
Adjacent sequences: A153774 A153775 A153776 * A153778 A153779 A153780
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KEYWORD
| nonn
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.duc), Jan 02 2009
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