|
Search: id:A156172
|
|
| |
|
| 2, 14, 610, 66734, 13631170, 4474847054, 2154541552930, 1430306187579374, 1252111529306645890, 1397549490970710103694, 1937106722774840873390050, 3264361741756845694953780014, 6572644038805857912224455865410, 15583184923914619905634967412688334, 42971525874172716914734880462487351970
(list; graph; listen)
|
|
|
OFFSET
|
0,1
|
|
|
COMMENT
|
Suggested by analogy with A000191.
|
|
MAPLE
|
Q:=proc(n) option remember; if n=0 then RETURN(1); else RETURN(expand((u^2+1)*diff(Q(n-1), u)+u*Q(n-1))); fi; end;
[seq(2*subs(u=sqrt(3), Q(2*n)), n=0..25)];
|
|
CROSSREFS
|
Sequence in context: A015184 A012002 A012005 this_sequence A013036 A075044 A060599
Adjacent sequences: A156169 A156170 A156171 this_sequence A156173 A156174 A156175
|
|
KEYWORD
|
nonn,new
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com), Nov 06 2009
|
|
|
Search completed in 0.002 seconds
|
