OFFSET
0,3
COMMENTS
A biquanimous string is a string whose digits can be split into two groups with equal sums.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (18, -137, 582, -1527, 2574, -2795, 1890, -724, 120).
FORMULA
G.f.: -(60*x^10 -422*x^9 +1044*x^8 -1855*x^7 +2394*x^6 -2122*x^5 +1273*x^4 -504*x^3 +124*x^2 -17*x +1) / ((5*x-1) *(3*x-1) *(2*x-1)^3 *(x-1)^4).
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Jun 13 2017
STATUS
approved