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A055087
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Integers 0..n then 0..n then 0..n+1 then 0..n+1 etc.
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3
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0, 0, 0, 1, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1
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OFFSET
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0,9
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COMMENTS
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Second column in the monotonic justified array of all positive generalized Fibonacci sequences (A160271). see also A199474. - Casey Mongoven, Nov 06 2011
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LINKS
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Table of n, a(n) for n=0..101.
M. Somos, Sequences used for indexing triangular or square arrays
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EXAMPLE
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0; 0; 0,1; 0,1; 0,1,2; 0,1,2; 0,1,2,3; 0,1,2,3; ...
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PROG
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(PARI) {a(n) = (1 + 4*n - sqr( floor( sqrt( 1 + 4*n)))) \ 4}
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CROSSREFS
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Sequence in context: A096771 A129714 A022333 * A025685 A194515 A163325
Adjacent sequences: A055084 A055085 A055086 * A055088 A055089 A055090
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KEYWORD
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nonn,easy
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AUTHOR
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Michael Somos, Jun 13 2000
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STATUS
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approved
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