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%I #23 Nov 09 2021 06:06:44
%S 0,0,0,0,0,0,0,0,0,90,0,90,180,270,360,450,540,630,720,180,90,0,90,
%T 180,270,360,450,540,630,270,180,90,0,90,180,270,360,450,540,360,270,
%U 180,90,0,90,180,270,360,450,450,360,270,180,90,0,90,180,270,360,540,450,360,270,180,90,0,90,180,270,630,540,450,360,270,180,90
%N a(n) = abs(A020338(n)-A338754(n))
%C All terms are multiples of 90.
%F a(A010785(n)) = 0
%e a(1) = abs(11-11) = 0
%e a(15) = abs(1515-1155) = 360
%e a(1965) = abs(19651965-11996655) = 7655310
%o (PARI) a(n)=abs(eval(Str(n, n))-fromdigits(digits(n), 100)*11) \\ _Charles R Greathouse IV_, Oct 04 2021
%Y Cf. A020338, A338754, A010785.
%K nonn,base,easy
%O 1,10
%A _Nicolas Bělohoubek_, Oct 04 2021
%E Corrected by _Charles R Greathouse IV_, Oct 04 2021
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