OFFSET
0,2
LINKS
Harry J. Smith, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (7,-21,35,-35,21,-7,1).
FORMULA
a(n) = (n^2+1)*(n^4+1) = A002522(n)*A002523(n) = A002522(n)*A002522(n^2). a(n) = (n^8-1)/(n^2-1) = -A024006(n)/A067998(n+1), n>1. - Alexander Adamchuk, Apr 13 2006
G.f.: -(4*x^6+57*x^5+309*x^4+274*x^3+78*x^2-3*x+1)/(x-1)^7. - Colin Barker, Nov 05 2012
MATHEMATICA
Table[(n^2+1)*(n^4+1), {n, 0, 40}] (* Alexander Adamchuk, Apr 13 2006 *)
PROG
(PARI) { for (n=0, 1000, f=n^2; write("b059830.txt", n, " ", (f + 1)*(f^2 + 1)); ) } \\ Harry J. Smith, Jun 29 2009
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Feb 25 2001
STATUS
approved