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!)
A178108 Inverse of coefficient array for orthogonal polynomials P(n,x)=x*P(n-1,x)-2*floor((n+2)/2)-3)*P(n-2,x), P(0,x)=1,P(1,x)=x. 1
1, 0, 1, 1, 0, 1, 0, 2, 0, 1, 2, 0, 5, 0, 1, 0, 7, 0, 8, 0, 1, 7, 0, 31, 0, 13, 0, 1, 0, 38, 0, 70, 0, 18, 0, 1, 38, 0, 248, 0, 160, 0, 25, 0, 1, 0, 286, 0, 728, 0, 285, 0, 32, 0, 1, 286, 0, 2470, 0, 2153, 0, 509, 0, 41, 0, 1, 0, 2756, 0, 8929, 0, 4698, 0, 796, 0, 50, 0, 1, 2756, 0, 29543, 0 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,8

COMMENTS

Inverses is A178107. First column is aeration of A094664.

LINKS

Table of n, a(n) for n=0..81.

EXAMPLE

Triangle begins

1,

0, 1,

1, 0, 1,

0, 2, 0, 1,

2, 0, 5, 0, 1,

0, 7, 0, 8, 0, 1,

7, 0, 31, 0, 13, 0, 1,

0, 38, 0, 70, 0, 18, 0, 1,

38, 0, 248, 0, 160, 0, 25, 0, 1,

0, 286, 0, 728, 0, 285, 0, 32, 0, 1,

286, 0, 2470, 0, 2153, 0, 509, 0, 41, 0, 1

Production matrix is

0, 1,

1, 0, 1,

0, 1, 0, 1,

0, 0, 3, 0, 1,

0, 0, 0, 3, 0, 1,

0, 0, 0, 0, 5, 0, 1,

0, 0, 0, 0, 0, 5, 0, 1,

0, 0, 0, 0, 0, 0, 7, 0, 1,

0, 0, 0, 0, 0, 0, 0, 7, 0, 1

CROSSREFS

Sequence in context: A145316 A137298 A136487 * A021501 A237049 A101662

Adjacent sequences:  A178105 A178106 A178107 * A178109 A178110 A178111

KEYWORD

nonn,tabl

AUTHOR

Paul Barry, May 20 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 October 20 09:40 EDT 2021. Contains 348100 sequences. (Running on oeis4.)