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A324792 First differences of A325056: distance in A076042 from n-th low point to the next. 4
5, 5, 9, 15, 25, 45, 77, 133, 231, 401, 693, 1201, 2081, 3603, 6241, 10809, 18723, 32429, 56169, 97287, 168505, 291861, 505517, 875581, 1516551, 2626743, 4549653, 7880231, 13648959, 23640691, 40946879, 70922073, 122840635, 212766221, 368521905, 638298663 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Giovanni Resta, Table of n, a(n) for n = 0..41

MATHEMATICA

a=b=c=d=n=0; L={0}; While[Length[L] < 22, n++; a=b; b=c; c=d; d=c + If[c < n^2, n^2, -n^2]; If[a > b < c < d, AppendTo[L, n-2]]]; Differences@ L (* Giovanni Resta, Oct 01 2019 *)

CROSSREFS

Cf. A076042, A325056, A324791.

If we use primes instead of squares we get A008348, A309226, A324782, A324783.

Sequence in context: A047880 A058491 A058584 * A147197 A323301 A147047

Adjacent sequences:  A324789 A324790 A324791 * A324793 A324794 A324795

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Sep 04 2019

EXTENSIONS

More terms from Giovanni Resta, Oct 01 2019

STATUS

approved

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Last modified November 19 20:42 EST 2019. Contains 329323 sequences. (Running on oeis4.)