The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 16 20:53 EDT 2024. Contains 375977 sequences. (Running on oeis4.)