

A140061


Triangle of quotients.


3



1, 3, 2, 5, 4, 3, 9, 8, 6, 4, 11, 10, 9, 8, 5, 17, 16, 15, 12, 10, 6, 21, 20, 18, 16, 15, 12, 7, 29, 28, 27, 24, 20, 18, 14, 8, 33, 32, 30, 28, 25, 24, 21, 16, 9, 41, 40, 39, 36, 35, 30, 28, 24, 18, 10, 47, 46, 45, 44, 40, 36, 35, 32, 27, 20, 11, 57, 56, 54, 52, 50, 48, 42, 40, 36
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OFFSET

1,2


COMMENTS

Column 1 is essentially A007952.  Clark Kimberling, Aug 27 2008


LINKS

Table of n, a(n) for n=1..75.


FORMULA

The triangular subarray of A140060 consisting of rows whose terms are distinct. If n is the first term in a row (i.e., if n is a term of A082447), then Q(n,1)=n, Q(n,k)=k*Floor(Q(n,k1)/k).


EXAMPLE

First 6 rows:
1
3 2
5 4 3
9 8 6 4
11 10 9 8 5
17 16 15 12 10 6


MATHEMATICA

Flatten@Table[Reverse@FoldList[#2*Floor[#1/#2+1]&, i, Reverse@Range[i1]], {i, 10}] (* Birkas Gyorgy, Feb 26 2011 *)


CROSSREFS

Cf. A140060.
Cf. A007952.
Sequence in context: A239680 A128076 A076243 * A292776 A061313 A259846
Adjacent sequences: A140058 A140059 A140060 * A140062 A140063 A140064


KEYWORD

nonn,tabf


AUTHOR

Clark Kimberling, May 03 2008


STATUS

approved



