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A097471 A076678(n) - A076678(n-1) where A076678(n) is a(0)=a(1)=1 a(n)=floor(sqrt(a(n-1)))+a(n-2). 0
0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 3, 2, 3, 2, 3, 3, 3, 3, 3, 4, 3, 4, 3, 5, 3, 5, 3, 5, 4, 5, 4, 5, 5, 5, 5, 5, 6, 5, 6, 5, 7, 5, 7, 5, 8, 5, 8, 5, 8, 6, 8, 6, 8, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,12

LINKS

Table of n, a(n) for n=1..64.

MATHEMATICA

nxt[{a_, b_}]:={b, Floor[Sqrt[b]]+a}; Differences[NestList[nxt, {1, 1}, 70][[All, 1]]] (* Harvey P. Dale, Sep 10 2017 *)

CROSSREFS

Sequence in context: A084359 A143935 A008616 * A025868 A271721 A050252

Adjacent sequences:  A097468 A097469 A097470 * A097472 A097473 A097474

KEYWORD

nonn

AUTHOR

Gerald McGarvey, Sep 18 2004

STATUS

approved

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Last modified April 18 22:08 EDT 2019. Contains 322237 sequences. (Running on oeis4.)