

A000855


Final two digits of 2^n.


8



1, 2, 4, 8, 16, 32, 64, 28, 56, 12, 24, 48, 96, 92, 84, 68, 36, 72, 44, 88, 76, 52, 4, 8, 16, 32, 64, 28, 56, 12, 24, 48, 96, 92, 84, 68, 36, 72, 44, 88, 76, 52, 4, 8, 16, 32, 64, 28, 56, 12, 24, 48, 96, 92, 84, 68, 36, 72, 44, 88, 76, 52, 4, 8, 16, 32, 64, 28
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OFFSET

0,2


COMMENTS

Has period 20 (starting with a(2)=4).


LINKS

Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,0,0,1,1).


FORMULA

G.f.: (50*x^12 +25*x^11 +13*x^10 44*x^9 +28*x^8 36*x^7 +32*x^6 +16*x^5 +8*x^4 +4*x^3 +2*x^2 +x +1) / ((x 1)*(x^2 +1)*(x^8 x^6 +x^4 x^2 +1)).  Colin Barker, Dec 01 2014


MATHEMATICA



PROG



CROSSREFS



KEYWORD

nonn,base,easy


AUTHOR



STATUS

approved



