Search: id:A048572
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%I A048572
%S A048572 1,2,2,4,8,5,4,2,8,7,11,14,10,5,5,7,8,11,16,14,8,4,5,2,
%T A048572 1,2,2,4,8,5,4,2,8,7,11,14,10,5,5,7,8,11,16,14,8,4,5,2,
%U A048572 1,2,2,4,8,5,4,2,8,7,11,14,10,5,5,7,8,11,16,14,8,4,5,2
%N A048572 a(n) = sum of digits of a(n-1)*a(n-2).
%C A048572 This sequence is periodic with period 24. - T. D. Noe (noe(AT)sspectra.com), 
               Feb 15 2008
%F A048572 a(n)=(1/6624)*{439*(n mod 24)+991*[(n+1) mod 24]-113*[(n+2) mod 24]+1267*[(n+3) 
               mod 24]+1819*[(n+4) mod 24]+715*[(n+5) mod 24]-1217*[(n+6) mod 24]-665*[(n+7) 
               mod 24]-113*[(n+8) mod 24]-389*[(n+9) mod 24]+163*[(n+10) mod 24]+1543*[(n+11) 
               mod 24]+1267*[(n+12) mod 24]-665*[(n+13) mod 24]-941*[(n+14) mod 
               24]+439*[(n+15) mod 24]-1493*[(n+16) mod 24]+715*[(n+17) mod 24]+439*[(n+18) 
               mod 24]+991*[(n+19) mod 24]-941*[(n+20) mod 24]-389*[(n+21) mod 24]+163*[(n+22) 
               mod 24]-113*[(n+23) mod 24]}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), 
               Apr 01 2009]
%Y A048572 Sequence in context: A077964 A077968 A123958 this_sequence A121173 A160159 
               A101651
%Y A048572 Adjacent sequences: A048569 A048570 A048571 this_sequence A048573 A048574 
               A048575
%K A048572 nonn,easy,nice,base
%O A048572 1,2
%A A048572 David Johnson-Davies (david(AT)interface.co.uk)

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