login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A180338 Triangle by rows, A033452 convolved with A000079 2
1, 2, 5, 4, 10, 22, 8, 20, 44, 99, 16, 40, 88, 198, 471, 32, 80, 176, 396, 942, 2386, 64, 160, 352, 792, 1884, 4772, 12867, 128, 324, 704, 1584, 3768, 9544, 25734, 73681 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums = A058681: (1, 7, 36, 171, 813, 4012, 20891,...).

LINKS

Table of n, a(n) for n=0..35.

FORMULA

Antidiagonals of a multiplication table generated from A033452 * powers of 2.

EXAMPLE

First few rows of the triangle =

1;

2, 5;

4, 10, 22;

8, 20, 44, 99;

16, 40, 88, 198, 471;

32, 80, 176, 396, 942, 2386;

64, 160, 352, 792, 1884, 4772, 12867;

128, 324, 704, 1584, 3768, 9544, 25734, 73681;

...

CROSSREFS

Cf. A033452, A058681

Sequence in context: A114393 A241256 A230435 * A232646 A100710 A069913

Adjacent sequences:  A180335 A180336 A180337 * A180339 A180340 A180341

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Aug 28 2010

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 February 18 02:57 EST 2020. Contains 332006 sequences. (Running on oeis4.)