OFFSET
1,5
COMMENTS
Base-5 analog of A202303.
FORMULA
Conjecture: a(n) = 323*a(n-4)-323*a(n-8)+a(n-12) for n>13. - Colin Barker, Sep 20 2014
Empirical g.f.: -x^4*(x^9 +9*x^8 +64*x^7 +16*x^6 +118*x^5 +118*x^4 +64*x^3 +16*x^2 +9*x +1) / ((x -1)*(x +1)*(x^2 -4*x -1)*(x^2 +1)*(x^2 +4*x -1)*(x^4 +18*x^2 +1)). - Colin Barker, Sep 20 2014
PROG
(PARI) b=5; for(n=0, 1e7, issquare(n^2\b) & print1(n^2\b, ", "))
CROSSREFS
KEYWORD
nonn,base
AUTHOR
M. F. Hasler, Jan 16 2012
EXTENSIONS
More terms from Colin Barker, Sep 20 2014
STATUS
approved