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!)
A168534 Triangle read by rows, A168532 * A000012; as infinite lower triangular matrices. 2

%I #3 Mar 30 2012 17:25:35

%S 1,2,1,3,1,1,5,2,1,1,7,1,1,1,1,11,4,2,1,1,1,15,1,1,1,1,1,1,22,5,2,2,1,

%T 1,1,1,30,3,3,1,1,1,1,1,1,42,8,2,2,2,1,1,1,1,1,56,1,1,1,1,1,1,1,1,1,1,

%U 77,14,7,4,2,2,1,1,1,1,1,1

%N Triangle read by rows, A168532 * A000012; as infinite lower triangular matrices.

%C Row sums = A078392: (1, 3, 5, 9, 11, 20, 21,...).

%C Triangle A168533 = A000012 * A168532

%C Left border = the partition numbers, A000041 starting with offset 1.

%F Triangle read by rows, A168532 * A000012; where A000012 = an infinite lower

%F triangular matrix with all 1's. The operation takes partial row sums

%F starting from the right of each row.

%e First few rows of the triangle =

%e 1;

%e 2, 1;

%e 3, 1, 1;

%e 5, 2, 1, 1;

%e 7, 1, 1, 1, 1;

%e 11, 4, 2, 1, 1, 1;

%e 15, 1, 1, 1, 1, 1, 1;

%e 22, 5, 2, 2, 1, 1, 1, 1;

%e 30, 3, 3, 1, 1, 1, 1, 1, 1;

%e 42, 8, 2, 2, 2, 1, 1, 1, 1, 1;

%e 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1;

%e 77, 14, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1;

%e 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1;

%e 135, 16, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1;

%e 176, 9, 9, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1

%e 231, 22, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1;

%e ...

%Y Cf. A168532, A168533, A000041, A078392

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Nov 28 2009

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.)