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!)
A141155 Triangle read by rows, A140207 * A000012. 1
1, 2, 1, 4, 3, 2, 7, 6, 5, 3, 12, 11, 10, 8, 5, 19, 18, 17, 15, 12, 7, 30, 29, 28, 26, 23, 18, 11, 45, 44, 43, 41, 38, 33, 26, 15, 67, 66, 65, 63, 60, 55, 48, 37, 22, 97, 96, 95, 93, 90, 85, 78, 67, 52, 30 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
Right border = the partition numbers, A000041.
LINKS
FORMULA
A140207 * A000012 as infinite lower triangular matrices.
EXAMPLE
First few rows of the triangle are:
1;
2, 1;
4, 3, 2;
7, 6, 5, 3;
12, 11, 10, 8, 5;
19, 18, 17, 15, 12, 7;
30, 29, 28, 26, 23, 18, 11;
45, 44, 43, 41, 38, 33, 26, 15;
...
n-th row of the triangle = partial sums n-th row terms of triangle A140207 starting from the right. Example: row 3 = (7, 6, 5, 3), since row 3 of triangle A140207 = (1, 1, 2, 3).
CROSSREFS
Cf. A000041, A000070 (first column), A141156 (row sums), A140207.
Sequence in context: A064277 A287010 A144330 * A204922 A057669 A243610
KEYWORD
nonn,tabl
AUTHOR
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 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)