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

 

Logo

The submissions stack has been unacceptably high for several months now. Please voluntarily restrict your submissions and please help with the editing. (We don't want to have to impose further limits.)

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A139331 Triangle read by rows: ConvOffsStoT transform of A103505. 0
1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 6, 12, 6, 1, 1, 12, 72, 72, 12, 1, 1, 20, 240, 720, 240, 20, 1, 1, 30, 600, 3600, 3600, 600, 30, 1, 1, 56, 1680, 16800, 33600, 16800, 1680, 56, 1, 1, 72, 4032, 60480, 201600, 201600, 60480, 4032, 72, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Table of n, a(n) for n=0..54.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

1, 1, 1;

1, 2, 2, 1;

1, 6, 12, 6, 1;

1, 12, 72, 72, 12, 1;

1, 20, 240, 720, 240, 20, 1;

1, 30, 600, 3600, 3600, 600, 30, 1;

...

Row 4 = (1, 6, 12, 6, 1) since ConvOffs transform of (1, 1, 2, 6) = (1, 6, 12, 6, 1); where A103505 = (1, 1, 2, 6, 12, 20, 30, 56, 72,...).

CROSSREFS

Cf. A103505.

Sequence in context: A176224 A174640 A138169 * A173886 A090441 A155794

Adjacent sequences:  A139328 A139329 A139330 * A139332 A139333 A139334

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson and Roger L. Bagula, Apr 13 2008

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified August 28 13:22 EDT 2015. Contains 261122 sequences.