OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (40, -590, 3800, -9009) conjectured.
FORMULA
Conjecture: a(n) = 2*11^n+13^n/2+5*9^n-15*7^n/2 ; a(n) = +40*a(n-1) -590*a(n-2) +3800*a(n-3) -9009*a(n-4). G.f.: x*(21-476*x+2663*x^2) / ( (11*x-1)*(13*x-1)*(7*x-1)*(9*x-1) ). [R. J. Mathar May 25 2010]
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, suggested by R. J. Mathar in the Sequence Fans Mailing List, May 25 2010
STATUS
approved