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A175358 Irregular array read by rows: Row n contains A043276(n) terms. a(n,m) = number of runs (of either 0 or 1) of length m in the binary representation of n. 1
1, 2, 0, 1, 1, 1, 3, 1, 1, 0, 0, 1, 1, 0, 1, 2, 1, 4, 2, 1, 0, 2, 2, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 2, 0, 1, 3, 1, 1, 2, 3, 1, 5, 3, 1, 2, 0, 1, 0, 1, 1, 1, 2, 3, 1, 1, 2, 0, 1, 1, 2, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 2, 0, 0, 1, 3, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
23 in binary is 10111. There are two runs of length 1, zero runs of length 2, and one run of length 3. So, row 23 is (2,0,1).
PROG
(PARI) row(n) = my (r=[]); while (n, my (v=valuation(n+(n%2), 2)); r = concat(v, r); n\=2^v); my (f=vector(vecmax(r))); for (i=1, #r, f[r[i]]++); f \\ Rémy Sigrist, Feb 13 2019
CROSSREFS
Sequence in context: A120648 A215401 A254606 * A235330 A029394 A357914
KEYWORD
base,nonn,tabf
AUTHOR
Leroy Quet, Apr 22 2010
EXTENSIONS
More terms from Rémy Sigrist, Feb 13 2019
STATUS
approved

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Last modified May 30 18:48 EDT 2024. Contains 372974 sequences. (Running on oeis4.)