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A183991
Ranks of (even i)+(odd j)*r when all i+j*r are ranked, r=golden ratio, i>=0, j>=0.
7
3, 8, 12, 15, 21, 25, 28, 32, 37, 41, 46, 50, 52, 56, 62, 67, 69, 74, 78, 81, 86, 89, 94, 99, 102, 108, 111, 113, 117, 122, 126, 132, 136, 138, 142, 148, 152, 155, 159, 163, 165, 170, 176, 181, 184, 188, 192, 195, 200, 203, 207, 212, 215, 220, 224, 227, 233
OFFSET
1,1
EXAMPLE
Writing (i,j) for i+r*j, the first 7 in the ranking are
(0,0), (1,0), (0,1), (2,0), (1,1), (3,0), (0,2);
the rank where i is even and j is odd is a(1)=3.
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jan 08 2011
STATUS
approved