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A297964 a(n) = A296220(n) - 4n. 2
1, -2, 2, 1, 0, -1, -2, -3, -3, -2, -2, -1, -1, 0, 0, 1, 1, 2, 2, 3, 2, 2, 3, 2, 1, 1, 2, 1, 1, 2, 1, 0, 0, 1, 0, 0, 1, 0, -1, -1, 0, -1, -1, 0, -1, -2, -2, -1, -2, -2, -1, -2, -3, -3, -2, -3, -3, -2, -3, -4, -4, -3, -3, -2, -3, -3, -2, -3, -4, -4, -3, -3 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

It has been checked that -9 <= a(n) <= 8 for n=1..6*10^6. Conjectures: every integer appears infinitely many times, and -2 < a(n) - a(n-1) < 2 for n > 2.

LINKS

Clark Kimberling, Table of n, a(n) for n = 0..10000

MATHEMATICA

a[0] = 1; a[1] = 2; b[0] = 3; b[1] = 4;

a[n_] := a[n] = a[0]*b[n - 1] + a[1]*b[n - 2];

j = 1; While[j < 20000, k = a[j] - j - 1;

While[k < a[j + 1] - j + 1, b[k] = j + k + 2; k++]; j++];

Table[a[n], {n, 0, k}]; (* A296220 *)

Take[Table[a[n] - 4 n, {n, 0, k}], 300] (* A297964 *)

CROSSREFS

Cf. A296220.

Sequence in context: A053188 A109389 A098884 * A296239 A039800 A251418

Adjacent sequences:  A297961 A297962 A297963 * A297965 A297966 A297967

KEYWORD

sign,easy

AUTHOR

Clark Kimberling, Jan 10 2018

STATUS

approved

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Last modified October 21 18:11 EDT 2018. Contains 316427 sequences. (Running on oeis4.)