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A115843
Self-describing sequence. The n-th integer of the sequence indicates how many integers of the sequence are strictly < 9n.
0
1, 9, 10, 11, 12, 13, 14, 15, 16, 18, 27, 36, 45, 54, 63, 72, 81, 82, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130
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.
EXAMPLE
A(7)=14 because there are 14 integers in the sequence which are strictly < 63 (they are 1,9,10,11,12,13,14,15,16,18,27,36,45,54)
CROSSREFS
Sequence in context: A023392 A060009 A250042 * A058365 A162789 A121816
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, Feb 01 2006
STATUS
approved