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A345292
a(n) is the least k >= 0 such that A345290(k) = -n.
3
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).
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
Sequence in context: A357100 A085662 A155684 * A198357 A371850 A240341
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Jun 13 2021
STATUS
approved