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



(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A323834 A Seidel matrix a(n,k) read by antidiagonals downwards. 2


%S 0,1,1,1,2,3,-2,-1,1,4,-5,-7,-8,7,-3,16,11,4,-4,-11,-14,61,77,88,92,

%T 88,77,63,-272,-211,-134,-46,46,134,211,274

%N A Seidel matrix a(n,k) read by antidiagonals downwards.

%C The first row is a signed version of the Euler numbers A000111.

%C Other rows are defined by a(n+1,k) = a(n,k)+a(n,k+1).

%H A. Randrianarivony and J. Zeng, <a href="http://dx.doi.org/10.1006/aama.1996.0001">Une famille de polynomes qui interpole plusieurs suites...</a>, Adv. Appl. Math. 17 (1996), 1-26. See Section 6.

%e The first few antidiagonals are:

%e 0,

%e 1,1,

%e 1,2,3,

%e -2,-1,1,4,

%e -5,-7,-8,7,-3,

%e 16,11,4,-4,-11,-14,

%e 61,77,88,92,88,77,63,

%e -272,-211,-134,-46,46,134,211,274,

%e ...

%e For the array itself, see the Randrianarivony and Zeng (1996) article.

%Y Cf. A000111, A000657 (next-to-main diagonal), A323833.

%K sign,tabl,more

%O 0,5

%A _N. J. A. Sloane_, Feb 03 2019

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 8 07:34 EDT 2020. Contains 335513 sequences. (Running on oeis4.)