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Search: id:A102150
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| A102150 |
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a(0)=0; a(1)=2. Slowest increasing sequence where every digit "d" has a copy of itself in a(n+d). |
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+0
3
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| 0, 2, 3, 12, 13, 123, 124, 132, 213, 214, 1234, 1235, 1236, 1243, 1324, 1325, 1352, 1423, 12346, 12347, 12350, 12354, 12364, 12374, 12376, 12435, 123457, 123458, 123459, 123460, 1234567, 1234568, 1234569, 1234570, 1234571, 1234586, 1234596
(list; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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The copy of the first "2" is to be found in "12", 2 jumps to the right.
The copy of the first "3" is to be found in "123", 3 jumps to the right.
The copy of the first "1" is to be found in "13", 1 jump to the right, etc.
The "3" of "13" comes from the obligation of having the smallest gap between two integers. The same reason explains the apparition of the first "4" (the next integer after 123 is 124). The digit "0" obeys the same rules and doesn't copy itself anywhere, of course.
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CROSSREFS
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Sequence in context: A081347 A074347 A102034 this_sequence A039588 A024579 A068603
Adjacent sequences: A102147 A102148 A102149 this_sequence A102151 A102152 A102153
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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), Feb 15 2005
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