OFFSET
4,2
COMMENTS
LINKS
Paolo Xausa, Table of n, a(n) for n = 4..10000
M. Haapanen, What is this and how to prove?, newgsroups sci.math, Mar 28 1996
K. Makella, Mika luku tulee seuraavana?, sfnet.tiede.matematiikka, Jan 2008
Lars Radvall, Multiplar (PDF).
Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,0,0,-1,1).
FORMULA
Periodic: a(n+20) = a(n).
MAPLE
for n from 4 to 130 do 2 &^ n mod 100 ; printf("%d, ", floor(%/10)) ; od:
MATHEMATICA
PadRight[{}, 100, {1, 3, 6, 2, 5, 1, 2, 4, 9, 9, 8, 6, 3, 7, 4, 8, 7, 5, 0, 0}] (* Paolo Xausa, Oct 22 2023 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Brian Tristam Williams (briantw(AT)briantw.com), May 20 2009
EXTENSIONS
Edited by R. J. Mathar, May 22 2009
STATUS
approved