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 A077750 Least significant digit of A077749(n). 1

%I

%S 0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,

%T 6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,

%U 0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0,2,6,4,0

%N Least significant digit of A077749(n).

%F a(n) = A077749(n) - 10*floor(A077749(n)/10).

%F a(4n-3) = 0, a(4n-2) = 2, a(4n-1) = 6, a(4n) = 4, n > 0. - _Sascha Kurz_, Jan 04 2003

%F a(n) = 3-3*cos(n*Pi/2)-sin(n*Pi/20. - _Wesley Ivan Hurt_, May 07 2021

%p seq((2^i-1-1) mod 10,i=1..160);

%Y Cf. A077749.

%K base,nonn

%O 0,2

%A _Amarnath Murthy_, Nov 20 2002

%E More terms from _Sascha Kurz_, Jan 04 2003

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Last modified July 29 07:00 EDT 2021. Contains 346340 sequences. (Running on oeis4.)