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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A130298 A051340 * A130296. 2
1, 5, 2, 12, 4, 3, 22, 6, 5, 4, 35, 8, 7, 6, 5, 51, 10, 9, 8, 7, 6, 70, 12, 11, 10, 9, 8, 7, 92, 14, 13, 12, 11, 10, 9, 8, 117, 16, 15, 14, 13, 12, 11, 10, 9, 145, 18, 17, 16, 15, 14, 13, 12, 11, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A003215: (1, 7, 19, 37, 61, 91,...). Left border = A000326: (1, 5, 12, 22, 35,...). A130299 = A130296 * A051340.

LINKS

Table of n, a(n) for n=1..55.

FORMULA

A051340 * A130296 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

5, 2;

12, 4, 3;

22, 6, 5, 4;

35, 8, 7, 6, 5;

51, 10, 9, 8, 7, 6;

70, 12, 11, 10, 9, 8, 7;

...

CROSSREFS

Cf. A051340, A130296, A003215, A000326.

Sequence in context: A275509 A286142 A286143 * A128116 A082153 A283944

Adjacent sequences:  A130295 A130296 A130297 * A130299 A130300 A130301

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, May 20 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 12 01:57 EST 2019. Contains 329948 sequences. (Running on oeis4.)