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, 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

Offset: 1

Author

Leroy Quet, Apr 22 2010

Keywords

• base
• nonn
• tabf

Examples

			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).
		

Links

• Rémy Sigrist, Rows n = 1..2048, flattened

Crossrefs

A043276

Programs

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

Extensions

More terms from Rémy Sigrist, Feb 13 2019