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A140223 Triangle: Row n contains (d(1),d(2),...,d(n)) in non-descending order, where d(n) = A000005(n). 2
1, 1, 2, 1, 2, 2, 1, 2, 2, 3, 1, 2, 2, 2, 3, 1, 2, 2, 2, 3, 4, 1, 2, 2, 2, 2, 3, 4, 1, 2, 2, 2, 2, 3, 4, 4, 1, 2, 2, 2, 2, 3, 3, 4, 4, 1, 2, 2, 2, 2, 3, 3, 4, 4, 4, 1, 2, 2, 2, 2, 2, 3, 3, 4, 4, 4, 1, 2, 2, 2, 2, 2, 3, 3, 4, 4, 4, 6, 1, 2, 2, 2, 2, 2, 2, 3, 3, 4, 4, 4, 6, 1, 2, 2, 2, 2, 2, 2, 3, 3, 4, 4, 4, 4, 6 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..105.

EXAMPLE

The sequence of the numbers of divisors of the first 12 positive integers is: 1,2,2,3,2,4,2,4,3,4,2,6.

Rearranging these into a non-descending sequence gets row-12 of the triangle: 1,2,2,2,2,2,3,3,4,4,4,6.

CROSSREFS

Cf. A000005, A140224, A140225.

Sequence in context: A007895 A053260 A267135 * A308694 A280521 A278043

Adjacent sequences:  A140220 A140221 A140222 * A140224 A140225 A140226

KEYWORD

nonn,tabl

AUTHOR

Leroy Quet, May 12 2008

EXTENSIONS

Extended by Ray Chandler, Jun 26 2009

STATUS

approved

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Last modified June 21 12:11 EDT 2021. Contains 345363 sequences. (Running on oeis4.)