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A037021
Greedy sequence such that no term is the average of four others.
0
0, 1, 2, 3, 5, 7, 13, 26, 27, 28, 29, 31, 122, 123, 124, 125, 127, 129, 135, 148, 149, 150, 151, 153, 610, 611, 612, 613, 615, 617, 623, 636, 637, 638, 639, 641, 732, 733, 734, 735, 737, 739, 745, 758, 759, 760, 761, 763, 3050, 3051
OFFSET
1,3
REFERENCES
Related to R. K. Guy, Unsolved Problems in Number Theory, Section C16.
LINKS
D. Tseng, Generalized nonaveraging integer sequences, Integers 12 (2012), no. 2, 275-300.
FORMULA
Terms are integers of the form 122A+R, where A has 0's and 1's in its base 5 expansion, and R is in the set {0, 1, 2, 3, 5, 7, 13, 26, 27, 28, 29, 31}. - Dennis Tseng, Jul 19 2013
CROSSREFS
Sequence in context: A227627 A335116 A135372 * A359505 A114741 A096177
KEYWORD
nonn
STATUS
approved