VOOZH about

URL: https://oeis.org/A096320

⇱ A096320 - OEIS

login
A096320
a(n) = (n^2+n+4)/2, modulo 10.
1
2, 3, 5, 8, 2, 7, 3, 0, 8, 7, 7, 8, 0, 3, 7, 2, 8, 5, 3, 2, 2, 3, 5, 8, 2, 7, 3, 0, 8, 7, 7, 8, 0, 3, 7, 2, 8, 5, 3, 2, 2, 3, 5, 8, 2, 7, 3, 0, 8, 7, 7, 8, 0, 3, 7, 2, 8, 5, 3, 2, 2, 3, 5, 8, 2, 7, 3, 0, 8, 7, 7, 8, 0, 3, 7, 2, 8, 5, 3, 2, 2, 3, 5, 8, 2, 7, 3, 0, 8, 7, 7, 8, 0, 3, 7, 2, 8, 5, 3, 2, 2, 3, 5, 8, 2
OFFSET
0,1
COMMENTS
This periodic sequence equals A008954(n)+2 modulo 10 and also A061501(n+1)+1 modulo 10.
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1).
FORMULA
a(0)=2, a(1)=3, a(2)=5, a(3)=8, a(4)=2, a(5)=7, a(6)=3, a(7)=0, a(8)=8, a(9)=7, a(10)=7, a(11)=8, a(12)=0, a(13)=3, a(14)=7, a(n)=a(n-5)-a(n-10)+ a(n-15). - Harvey P. Dale, Nov 16 2012
MATHEMATICA
Table[Mod[(n^2+n+4)/2, 10], {n, 0, 110}] (* or *) LinearRecurrence[ {0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1}, {2, 3, 5, 8, 2, 7, 3, 0, 8, 7, 7, 8, 0, 3, 7}, 110] (* Harvey P. Dale, Nov 16 2012 *)
CROSSREFS
Sequence in context: A111301 A247193 A362358 * A105955 A003893 A152303
KEYWORD
nonn,easy,less
AUTHOR
Cino Hilliard, Aug 02 2004
EXTENSIONS
Edited by Don Reble, Apr 16 2007
STATUS
approved