login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A129690 A129688 * A007318. 1

%I

%S 1,1,1,3,2,1,3,5,3,1,5,8,8,4,1,5,13,16,12,5,1,7,18,29,28,17,6,1,7,25,

%T 47,57,45,23,7,1,9,32,72,104,102,68,30,8,1,9,41,104,176,206,170,98,38,

%U 9,1

%N A129688 * A007318.

%C Row sums = A084170: (1, 2, 6, 12, 52, 106, 426,...). A129689 = A007318 * A129688. Left column = A109613: (1, 1, 3, 3, 5, 5,...).

%F A129688 * A007318 as infinite lower triangular matrices.

%e First few rows of the triangle are:

%e 1;

%e 1, 1;

%e 3, 2, 1;

%e 3, 5, 3, 1;

%e 5, 8, 8, 4, 1;

%e 5, 13, 16, 12, 5, 1;

%e 7, 18, 29, 28, 17, 6, 1;

%e ...

%Y Cf. A057711, A129689, A007318, A129688, A109613.

%K nonn,tabl

%O 1,4

%A _Gary W. Adamson_, Apr 28 2007

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 23 11:05 EDT 2019. Contains 323513 sequences. (Running on oeis4.)