

A184401


Ranks of (even i)+(odd j)*r, when all i+j*r are ranked; r=sqrt(2), i>=0, j>=0.


7



3, 8, 11, 16, 20, 25, 27, 32, 38, 40, 44, 47, 54, 57, 61, 64, 69, 73, 76, 81, 85, 90, 94, 98, 100, 104, 108, 114, 119, 123, 125, 129, 134, 136, 141, 146, 151, 153, 158, 163, 165, 170, 176, 178, 182, 184, 189, 195, 197, 203, 209, 211, 215
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..53.


EXAMPLE

Writing (i,j) for i+j*r, the first 7 in the ranking are (0,0), (1,0), (0,1), (2,0), (1,1), (0,2), (3,0); the rank where i is even and j is odd is 3.


CROSSREFS

Cf. A184397, A184398, A184399, A184400, A184402, A184403.
Sequence in context: A188473 A003234 A047470 * A190251 A003623 A190463
Adjacent sequences: A184398 A184399 A184400 * A184402 A184403 A184404


KEYWORD

nonn


AUTHOR

Clark Kimberling, Jan 12 2011


STATUS

approved



