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!)
A134446 A128174 * A002260. 2
1, 1, 2, 2, 2, 3, 2, 4, 3, 4, 3, 4, 6, 4, 5, 3, 6, 6, 8, 5, 6, 4, 6, 9, 8, 10, 6, 7, 4, 8, 9, 12, 10, 12, 7, 8, 5, 8, 12, 12, 15, 12, 14, 8, 9, 5, 10, 12, 16, 15, 18, 14, 16, 9, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Row sums = A002623: (1, 3, 7, 13, 22, 34, ...).
LINKS
FORMULA
A128174 * A002260 as infinite lower triangular matrices.
EXAMPLE
First few rows of the triangle:
1;
1, 2;
2, 2, 3;
2, 4, 3, 4;
3, 4, 6, 4, 5;
3, 6, 6, 8, 5, 6;
4, 6, 9, 8, 10, 6, 7;
...
CROSSREFS
Sequence in context: A126336 A364421 A352631 * A125749 A014085 A248891
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Oct 25 2007
STATUS
approved

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 March 28 07:46 EDT 2024. Contains 371235 sequences. (Running on oeis4.)