OFFSET
4,2
FORMULA
Empirical (for n>=8): a(n) = 416*n^4 - 6704*n^3 + 42495*n^2 - 127724*n + 155688. - Vaclav Kotesovec, Nov 30 2012
Conjectures from Colin Barker, Mar 23 2018: (Start)
G.f.: x^5*(235 + 8541*x - 3029*x^2 + 3869*x^3 + 1132*x^4 - 1212*x^5 + 430*x^6 + 18*x^7) / (1 - x)^5.
a(n) = 5*a(n-1) - 10*a(n-2) + 10*a(n-3) - 5*a(n-4) + a(n-5) for n>12.
(End)
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 14 2009
STATUS
approved