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A055087 Integers 0..n then 0..n then 0..n+1 then 0..n+1 etc. 3
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,9

COMMENTS

Second column in the monotonic justified array of all positive generalized Fibonacci sequences (A160271). see also A199474. - Casey Mongoven, Nov 06 2011

LINKS

Table of n, a(n) for n=0..101.

M. Somos, Sequences used for indexing triangular or square arrays

EXAMPLE

0; 0; 0,1; 0,1; 0,1,2; 0,1,2; 0,1,2,3; 0,1,2,3; ...

PROG

(PARI) {a(n) = (1 + 4*n - sqr( floor( sqrt( 1 + 4*n)))) \ 4}

CROSSREFS

Sequence in context: A096771 A129714 A022333 * A025685 A194515 A163325

Adjacent sequences:  A055084 A055085 A055086 * A055088 A055089 A055090

KEYWORD

nonn,easy

AUTHOR

Michael Somos, Jun 13 2000

STATUS

approved

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Last modified November 24 08:43 EST 2014. Contains 249873 sequences.