OFFSET
1,2
COMMENTS
Entries are always one of the odd digits 1,3,5,7,9.
Palindrome of period 10. [From Paul Curtz, Jan 04 2009]
LINKS
Index entries for linear recurrences with constant coefficients, signature (1,-1,1,-1,1,-1,1,-1,1).
FORMULA
G.f. -x*(1 +2*x +7*x^2 -2*x^3 +9*x^4 -2*x^5 +7*x^6 +2*x^7 +x^8) / ( (x-1) *(1+x+x^2+x^3+x^4) *(1-x+x^2-x^3+x^4) ). - R. J. Mathar, Jul 28 2013
MATHEMATICA
Mod[Floor[ #^2/10], 10] & /@ Select[Range[700], Mod[ #^2, 10] == 6 &] (* Ray Chandler, May 13 2005 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Lekraj Beedassy, May 10 2005
EXTENSIONS
Extended by Ray Chandler, May 13 2005
STATUS
approved