login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A182715 Triangle read by rows in which row n lists in nonincreasing order the smallest part of every partition of n. 9

%I #26 Dec 28 2023 09:25:21

%S 0,1,2,1,3,1,1,4,2,1,1,1,5,2,1,1,1,1,1,6,3,2,2,1,1,1,1,1,1,1,7,3,2,2,

%T 1,1,1,1,1,1,1,1,1,1,1,8,4,3,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,9,

%U 4,3,3,2,2,2,2,1,1,1,1,1,1,1,1,1,1

%N Triangle read by rows in which row n lists in nonincreasing order the smallest part of every partition of n.

%C Triangle read by rows in which row n lists the smallest parts of all partitions of n in the order produced by the shell model of partitions of A138121.

%C Also, row n lists the "filler parts" of all partition of n. For more information see A182699.

%C Row n has length A000041(n). Row sums give A046746. Column 1 gives A001477. The last A000041(n-1) terms of row n are ones, n >= 1.

%H Omar E. Pol, <a href="http://www.polprimos.com/imagenespub/polpanxt.jpg">Illustration of the smallest parts of all partitions of 10 (colored blue) in the shell model of partitions</a>

%e For row 10, see the illustration of the link.

%e Triangle begins:

%e 0,

%e 1,

%e 2,1,

%e 3,1,1,

%e 4,2,1,1,1,

%e 5,2,1,1,1,1,1,

%e 6,3,2,2,1,1,1,1,1,1,1,

%e 7,3,2,2,1,1,1,1,1,1,1,1,1,1,1,

%e 8,4,3,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1

%e 9,4,3,3,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1

%e ...

%Y Cf. A026807, A135010, A138121, A141285, A182699, A182709.

%Y Mirror of triangle A196931.

%K nonn,tabf

%O 0,3

%A _Omar E. Pol_, Dec 01 2010

%E Name simplified and more terms from _Omar E. Pol_, Oct 21 2011

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)