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A115837
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Self-describing sequence. The n-th integer of the sequence indicates how many integers of the sequence are strictly < 3n.
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1
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1, 3, 4, 6, 9, 10, 12, 13, 14, 15, 18, 19, 21, 24, 27, 30, 31, 32, 33, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 51, 54, 57, 58, 59, 60, 63, 64, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 105, 108, 111, 112, 113, 114, 117, 118, 120
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Terms computed by Gilles Sadowski. In building step by step the sequence one has sometimes the choice for an integer. If so take the smallest available one.
Is this the same sequence as A080710? - Andrew Plewe, May 08 2007
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EXAMPLE
| a(7)=12 because there are 12 integers in the sequence which are strictly < 21 (they are 1,3,4,6,9,10,12,13,14,15,18,19)
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CROSSREFS
| Sequence in context: A190899 A173671 A080710 * A102342 A014419 A138670
Adjacent sequences: A115834 A115835 A115836 * A115838 A115839 A115840
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KEYWORD
| base,easy,nonn
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AUTHOR
| Eric Angelini (eric.angelini(AT)kntv.be), Feb 01 2006
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