Search: id:A154815
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%I A154815
%S A154815 8,7,4,5,2,1,8,7,4,5,2,1,8,7,4,5,2,1,8,7,4,5,2,1,8,7,4,5,2,1,8,7,4,5,2,
%T A154815 1,8,7,4,5,2,1,8,7,4,5,2,1,8,7,4,5,2,1,8,7,4,5,2,1,8,7,4,5,2,1
%N A154815 Period 6: repeat 8, 7, 4, 5, 2, 1.
%C A154815 Obtained through reversion of the period in A153990, or by taking a half 
               period of A154811.
%C A154815 Shares digits with other 6-periodic sequences, see the list in A153130.
%C A154815 Also the decimal expansion of the constant 97169/111111 [R. J. Mathar 
               (mathar(AT)strw.leidenuniv.nl), Jan 23 2009]
%C A154815 Terms of the simple continued fraction of 2710/(sqrt(4579599)-1807). 
               [From Paolo P. Lava (ppl(AT)spl.at), Feb 17 2009]
%F A154815 a(n)=(1/15)*{-13*(n mod 6)+7*[(n+1) mod 6]+12*[(n+2) mod 6]+2*[(n+3) 
               mod 6]+12*[(n+4) mod 6]+7*[(n+5) mod 6]}, with n>=0 [From Paolo P. 
               Lava (ppl(AT)spl.at), Jan 16 2009]
%F A154815 a(n) = (8*A153990(n)) mod 9.
%F A154815 G.f.: (8+7x+4x^2+5x^3+2x^4+x^5)/((1-x)(1+x)(1+x+x^2)(x^2-x+1)). [R. J. 
               Mathar (mathar(AT)strw.leidenuniv.nl), Jan 23 2009]
%Y A154815 Sequence in context: A131081 A158288 A072102 this_sequence A085848 A008960 
               A077744
%Y A154815 Adjacent sequences: A154812 A154813 A154814 this_sequence A154816 A154817 
               A154818
%K A154815 nonn,easy
%O A154815 0,1
%A A154815 Paul Curtz (bpcrtz(AT)free.fr), Jan 15 2009
%E A154815 Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 23 2009

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