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A325056 Index of n-th low point in A076042. 4
0, 5, 10, 19, 34, 59, 104, 181, 314, 545, 946, 1639, 2840, 4921, 8524, 14765, 25574, 44297, 76726, 132895, 230182, 398687, 690548, 1196065, 2071646, 3588197, 6214940, 10764593, 18644824, 32293783, 55934474, 96881353, 167803426, 290644061, 503410282, 871932187 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 0..3999 (Terms up through a(42) from Giovanni Resta.)

N. J. A. Sloane, Table of n, a(n) for n = 0..10000

MAPLE

See A324791.

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]]]; L (* Giovanni Resta, Oct 01 2019 *)

PROG

See PARI program in A076042.

CROSSREFS

Cf. A076042, A324791, A324792.

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

Sequence in context: A047882 A184260 A053311 * A147390 A300019 A115825

Adjacent sequences:  A325053 A325054 A325055 * A325057 A325058 A325059

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Sep 04 2019

EXTENSIONS

a(14)-a(17) added by N. J. A. Sloane, Sep 30 2019

More terms from Giovanni Resta, Oct 01 2019

Modified definition to make offset 0. - N. J. A. Sloane, Oct 02 2019

STATUS

approved

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Last modified November 12 22:16 EST 2019. Contains 329079 sequences. (Running on oeis4.)