|
Search: id:A111522
|
|
|
| A111522 |
|
Sequence is {a(4,n)}, where a(m,n) is defined at sequence A111518. |
|
+0
6
|
|
| 1, 4, 7, 4, -4, -5, -49, -200, 59, 10, -5240, 11936, 30806, -412987, 1352862, 3166014, -57455111, 263800403, 200944299, -11339467789, 77531515035, -118123511262, -2692592328869, 29677554626711, -125561516944238, -528175322368741, 13093479718202187
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
LINKS
|
Leroy Quet, Home Page (listed in lieu of email address)
|
|
EXAMPLE
|
a(0,n): 1,0,-3,-4,7,...
a(1,n): 1,1,-2,-6,1,...
a(2,n): 1,2,0,-6,-5,...
a(3,n): 1,3,3,-3,-8,...
a(4,n): 1,4,7,4,-4,...
Main diagonal is 1,1,0,-3,-4,..., which is 1 followed by sequence a(0,n).
|
|
MAPLE
|
A111522T := proc(nmax) local a, m, n; a := array(0..nmax, 0..nmax) ; for m from 0 to nmax do a[m, 0] := 1 ; od ; for n from 1 to nmax do a[n, n] := a[0, n-1] ; for m from n+1 to nmax do a[m, n] := a[m-1, n]+a[m, n-1] ; od ; for m from n-1 to 0 by -1 do a[m, n] := a[m+1, n]-a[m+1, n-1] ; od ; od ; RETURN(a) ; end: nmax := 50 ; a := A111522T(nmax) ; m := 4 ; for n from 0 to nmax do printf("%d, ", a[m, n]) ; od; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 26 2006
|
|
CROSSREFS
|
Cf. A111518, A111519, A111520, A111521, A111523.
Sequence in context: A020803 A019626 A005472 this_sequence A019735 A106739 A112677
Adjacent sequences: A111519 A111520 A111521 this_sequence A111523 A111524 A111525
|
|
KEYWORD
|
easy,sign
|
|
AUTHOR
|
Leroy Quet Aug 05 2005
|
|
EXTENSIONS
|
More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 26 2006
|
|
|
Search completed in 0.002 seconds
|
