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A183138 Floor(n/(2+sqrt(2))). 0
0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

A083051(n)=2*n+1+floor(n*sqrt(2)) is the location of the least k for which a(k)=n.

LINKS

Table of n, a(n) for n=1..71.

FORMULA

Floor(n/(2+sqrt(2))).

CROSSREFS

Cf. A183140.

Sequence in context: A060065 A057356 A172274 * A020913 A025787 A057810

Adjacent sequences:  A183135 A183136 A183137 * A183139 A183140 A183141

KEYWORD

nonn

AUTHOR

Clark Kimberling, Dec 26 2010

STATUS

approved

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Last modified October 31 00:58 EDT 2014. Contains 248845 sequences.