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A330639 A "Fractal Jump Sequence" (FJS) that reappears twice (itself and itself*2; see the Comments section). 1
1, 2, 2, 4, 4, 2, 8, 8, 4, 4, 16, 16, 8, 4, 8, 32, 32, 16, 2, 8, 16, 8, 64, 64, 32, 4, 16, 32, 16, 128, 8, 128, 64, 8, 32, 64, 32, 256 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Start on a(1) = 1 and underline it;
from there, jump over 1 term to the right; you land on a(3) = 2, which you underline;
from there, jump over 2 terms to the right; you'll land on a(6) = 2, which you underline;
from there, jump over 2 terms to the right; you'll land on a(9) = 4, which you underline;
from there, jump over 4 terms to the right; you'll land on a(14) = 4, which you underline;
from there, jump over 4 terms to the right; you'll land on a(19) = 2, which you underline; etc.
The underlined terms reproduce the starting sequence. The not underlined terms are the successive terms of the starting sequence multiplied by 2.
LINKS
CROSSREFS
Cf. A105496 (adding 1 instead of multiplying by 2 the non-underlined terms).
Sequence in context: A128442 A290633 A038674 * A339179 A182923 A263856
KEYWORD
base,nonn,more
AUTHOR
Eric Angelini, Dec 22 2019
STATUS
approved

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Last modified August 27 18:02 EDT 2024. Contains 375471 sequences. (Running on oeis4.)