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!)
A130028 A129686 * A054523. 0
1, 1, 1, 3, 0, 1, 3, 2, 0, 1, 6, 0, 1, 0, 1, 4, 3, 1, 1, 0, 1, 10, 0, 0, 0, 1, 0, 1, 6, 4, 1, 1, 0, 1, 0, 1, 12, 0, 2, 0, 0, 0, 1, 0, 1, 8, 6, 0, 1, 1, 0, 0, 1, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Row sums = A004277, 1 followed by even terms: (1, 2, 4, 6, 8, 10,...)

LINKS

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

FORMULA

A129686 * A054523 as infinite lower triangular matrices, where A129686 = the alternate term operator.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

3, 0, 1;

3, 2, 0, 1;

6, 0, 1, 0, 1;

4, 3, 1, 1, 0, 1;

10, 0, 0, 0, 1, 0, 1;

6, 4, 1, 1, 0, 1, 0, 1;

...

CROSSREFS

Cf. A129686, A054523, A004277.

Sequence in context: A160052 A035650 A084475 * A129560 A218603 A207032

Adjacent sequences:  A130025 A130026 A130027 * A130029 A130030 A130031

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, May 02 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 July 10 12:34 EDT 2020. Contains 335576 sequences. (Running on oeis4.)