A345292 a(n) is the least k >= 0 such that A345290(k) = -n.

0, 1, 7, 4, 5, 31, 18, 19, 16, 17, 23, 20, 21, 127, 74, 75, 72, 73, 79, 66, 67, 64, 65, 71, 68, 69, 95, 82, 83, 80, 81, 87, 84, 85, 511, 298, 299, 296, 297, 303, 290, 291, 288, 289, 295, 292, 293, 319, 266, 267, 264, 265, 271, 258, 259, 256, 257, 263, 260, 261

Offset

0,3

Comments

The binary plot of the sequence has interesting features (see Illustration in Links section).

Links

Rémy Sigrist, Table of n, a(n) for n = 0..6764

Rémy Sigrist, Binary plot of the first Fibonacci(13) = 233 terms

Rémy Sigrist, PARI program for A345292

Example

We have:
  n         | 0   1  2  3   4   5   6   7  8  9  10  11  12  13  14  15  16  17
  ----------+------------------------------------------------------------------
  A345290(n)| 0  -1  2  1  -3  -4  -1  -2  5  4   7   6   2   1   4   3  -8  -9
- so a(0) = 0,
     a(1) = 1,
     a(3) = 4,
     a(4) = 5,
     a(2) = 7,
     a(8) = 16,
     a(9) = 17.

Prog

(PARI) See Links section.

Crossrefs

Cf. A345290, A345291.

Sequence in context: A357100 A085662 A155684 * A198357 A371850 A240341

Adjacent sequences: A345289 A345290 A345291 * A345293 A345294 A345295

Keyword

nonn,base

Author

Rémy Sigrist, Jun 13 2021

Status

approved