A324792 First differences of A325056: distance in A076042 from n-th low point to the next.

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

Offset: 0

Author

N. J. A. Sloane, Sep 04 2019

Keywords

• nonn

Links

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

Crossrefs

Cf. A076042, A325056, A324791.

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

Programs

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 *)

Extensions

More terms from Giovanni Resta, Oct 01 2019