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 A115837 Self-describing sequence. The n-th integer of the sequence indicates how many integers of the sequence are strictly < 3n. 1
 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; text; internal format)
 OFFSET 1,2 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 S. Plewe, May 08 2007 LINKS 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). CROSSREFS Sequence in context: A173671 A325440 A080710 * A102342 A286692 A014419 Adjacent sequences:  A115834 A115835 A115836 * A115838 A115839 A115840 KEYWORD base,easy,nonn AUTHOR Eric Angelini, Feb 01 2006 STATUS approved

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Last modified December 10 00:54 EST 2019. Contains 329885 sequences. (Running on oeis4.)