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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A162169 Signed version of Pascals triangle. 2
1, -1, 1, -1, 0, 1, 1, 0, -3, 1, 1, 0, -6, 0, 1, -1, 0, 10, 0, -5, 1, -1, 0, 15, 0, -15, 0, 1, 1, 0, -21, 0, 35, 0, -7, 1, 1, 0, -28, 0, 70, 0, -28, 0, 1, -1, 0, 36, 0, -126, 0, 84, 0, -9, 1, -1, 0, 45, 0, -210, 0, 210, 0, -45, 0, 1, 1, 0, -55, 0, 330, 0, -462, 0, 165, 0, -11, 1, 1, 0, -66, 0 (list; table; graph; refs; listen; history; internal format)
OFFSET

1,9

COMMENTS

Related to A000111 via its matrix inverse A162170.

EXAMPLE

Table begins:

.1

-1...1

-1...0...1

.1...0..-3...1

.1...0..-6...0...1

-1...0..10...0..-5...1

-1...0..15...0.-15...0...1

PROG

(Other) (Excel cell formula) =if(or(mod(row()-column(); 4)=1; mod(row()-column(); 4)=2); -1; 1)*if(row()>=column(); combin(row()-1; column()-1); 0)*if(and(row()>column(); mod(column(); 2)=0); 0; 1)

CROSSREFS

Cf. A007318, A162170.

Sequence in context: A130115 A191582 A130160 * A124801 A124926 A175946

Adjacent sequences:  A162166 A162167 A162168 * A162170 A162171 A162172

KEYWORD

sign,tabl

AUTHOR

Mats Granvik (mats.granvik(AT)abo.fi), Jun 27 2009

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

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

Last modified February 16 10:53 EST 2012. Contains 205904 sequences.