OFFSET
1,2
FORMULA
Conjecture: a(n)=48*a(n-4)-576*a(n-8) with G.f. x*(1+5*x+14*x^2+50*x^3+176*x^4+80*x^5+64*x^6) / (-1+24*x^4)^2. - R. J. Mathar, Oct 15 2013
MATHEMATICA
f[k_] := 1 + Mod[k + 2, 4];
t[n_] := Table[f[k], {k, 1, n}]
a[n_] := SymmetricPolynomial[n - 1, t[n]]
Table[a[n], {n, 1, 33}] (* A203164 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Dec 30 2011
STATUS
approved