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A182628 Triangle T(n,k) read by rows in which row n lists the number of digits of the binary expansion of the divisors of n. 2
1, 1, 2, 1, 2, 1, 2, 3, 1, 3, 1, 2, 2, 3, 1, 3, 1, 2, 3, 4, 1, 2, 4, 1, 2, 3, 4, 1, 4, 1, 2, 2, 3, 3, 4, 1, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 5, 1, 5, 1, 2, 2, 3, 4, 5, 1, 5, 1, 2, 3, 3, 4, 5, 1, 2, 3, 5, 1, 2, 4, 5, 1, 5, 1, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row n lists the number of digits of the numbers in the n-th row of triangle A182620.

LINKS

Nathaniel Johnston, Table of n, a(n) for n = 1..10000

EXAMPLE

Triangle begins:

1,

1, 2,

1, 2,

1, 2, 3,

1, 3,

1, 2, 2, 3,

1, 3,

1, 2, 3, 4,

1, 2, 4,

1, 2, 3, 4,

1, 4,

1, 2, 2, 3, 3, 4,

MAPLE

with(numtheory):for n from 1 to 12 do for d in divisors(n) do printf("%d, ", length(convert(convert(d, binary), string))); od:printf("\n"); od: # Nathaniel Johnston, Apr 19 2011

CROSSREFS

Cf. A182620, A182621, A182622.

Row sums give A182627.

Sequence in context: A227779 A194066 A308916 * A274225 A028334 A083269

Adjacent sequences:  A182625 A182626 A182627 * A182629 A182630 A182631

KEYWORD

nonn,base,easy,tabf

AUTHOR

Omar E. Pol, Nov 23 2010

EXTENSIONS

a(38)-a(79) from Nathaniel Johnston, Apr 19 2011

STATUS

approved

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Last modified November 13 08:17 EST 2019. Contains 329087 sequences. (Running on oeis4.)