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A115840
Self-describing sequence. The n-th integer of the sequence indicates how many integers of the sequence are strictly < 6n.
0
1, 6, 7, 8, 9, 10, 12, 18, 24, 30, 36, 37, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 72, 73, 74, 75, 76, 78, 84, 90, 96, 102, 108, 114, 120, 126, 132, 138, 144, 150, 156, 162, 168, 174, 180, 186, 192, 198, 204, 210
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)=12 because there are 12 integers in the sequence which are strictly < 42 (they are 1,6,7,8,9,10,12,18,24,30,36,37)
CROSSREFS
Sequence in context: A178868 A069838 A067901 * A371565 A353437 A352155
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, Feb 01 2006
STATUS
approved