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A087469
a(n) = number of the row (counting from initial row 0) of the array R in A087468 that contains n.
1
0, 1, 0, 2, 1, 3, 0, 2, 4, 1, 3, 0, 5, 2, 4, 1, 6, 3, 0, 5, 2, 7, 4, 1, 6, 3, 0, 8, 5, 2, 7, 4, 1, 9, 6, 3, 0, 8, 5, 2, 10, 7, 4, 1, 9, 6, 3, 0, 11, 8, 5, 2, 10, 7, 4, 1, 12, 9, 6, 3, 0, 11, 8, 5, 2, 13, 10, 7, 4, 1, 12, 9, 6, 3, 0, 14, 11, 8, 5, 2, 13, 10, 7, 4, 1, 15, 12, 9, 6, 3, 0, 14, 11, 8, 5, 2, 16
OFFSET
1,4
COMMENTS
A fractal sequence.
LINKS
Clark Kimberling and John E. Brown, Partial Complements and Transposable Dispersions, J. Integer Seqs., Vol. 7, 2004.
EXAMPLE
Northwest corner of R:
.1 3 7 12 19
.2 5 10 16 24
.4 8 14 21 30
.6 11 18 26 36
.9 15 23 32 43
a(11)=3 because 11 is in row 3.
CROSSREFS
Sequence in context: A217176 A335097 A334312 * A022328 A215344 A025641
KEYWORD
nonn
AUTHOR
Clark Kimberling, Sep 09 2003
STATUS
approved