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!)
A157028 Triangle read by rows, A007318 * A156348 1
1, 2, 1, 4, 2, 1, 8, 5, 3, 1, 16, 12, 6, 4, 1, 32, 28, 13, 10, 5, 1, 64, 64, 33, 20, 15, 6, 1, 128, 144, 84, 39, 35, 21, 7, 1, 256, 320, 202, 88, 70, 56, 28, 8, 1, 512, 704, 468, 228, 131, 126, 84, 36, 9, 1, 1024, 1536, 1071, 600, 260, 252, 210, 120, 45, 10, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A157029: (1, 3, 7, 17, 39, 89, 203, 459,...).

LINKS

Table of n, a(n) for n=1..66.

FORMULA

Triangle read by rows, binomial transform of A156348.

EXAMPLE

1;

2, 1;

4, 2, 1;

8, 5, 3, 1;

16, 12, 6, 4, 1;

32, 28, 13, 10, 5, 1;

64, 64, 33, 20, 15, 6, 1;

128, 144, 84, 39, 35, 21, 7, 1;

256, 320, 202, 88, 70, 56, 28, 8, 1;

512, 704, 468, 228, 131, 126, 84, 36, 9, 1;

1024, 1536, 1071, 600, 260, 252, 210, 120, 45, 10, 1;

2048, 3328, 2441, 1495, 605, 468, 462, 330, 165, 55, 11, 1;

4096, 7168, 5532, 3508, 1595, 864, 924, 792, 495, 220, 66, 12, 1;

...

CROSSREFS

Cf. A156348, A157019, A157029

Sequence in context: A054453 A109433 A123490 * A060637 A123486 A158264

Adjacent sequences:  A157025 A157026 A157027 * A157029 A157030 A157031

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson & Mats Granvik, Feb 21 2009

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 May 28 15:33 EDT 2020. Contains 334684 sequences. (Running on oeis4.)