%I #16 Aug 26 2018 09:48:25
%S 7,7,3,9,0,1,7,8,7,6,0,2,8,1,8,8,4,4,5,5,2,0,3,8,5,7,8,8,1,8,0,6,6,3,
%T 0,6,3,4,6,0,2,7,5,1,4,8,7,4,6,5,2,9,7,4,9,9,7,1,2,2,9,4,2,9,6,0,3,2,
%U 2,1,0,8,0,7,3,2,0,3,1,0,8,1,5,2,5,7,7,9,8,9,2
%N The 10-adic integer a_7 = ...5448818206787109377 satisfying a_7^9 + 1 = a_8, a_8^9 + 1 = a_9, ... , a_5^9 + 1 = a_6 and a_6^9 + 1 = a_7.
%H Seiichi Manyama, <a href="/A318386/b318386.txt">Table of n, a(n) for n = 0..5000</a>
%e 5448818206787109377^9 + 1 == 6396884918212891138 (mod 10^19),
%e 6396884918212891138^9 + 1 == 5099734869332853249 (mod 10^19),
%e 5099734869332853249^9 + 1 == 7644773889965429250 (mod 10^19),
%e 7644773889965429250^9 + 1 == 7705078125000000001 (mod 10^19),
%e 7705078125000000001^9 + 1 == 9345703125000000002 (mod 10^19),
%e 9345703125000000002^9 + 1 == 2500000000000000513 (mod 10^19),
%e 2500000000000000513^9 + 1 == 8996619787545743874 (mod 10^19),
%e 8996619787545743874^9 + 1 == 3747888971752538625 (mod 10^19),
%e 3747888971752538625^9 + 1 == 1601963043212890626 (mod 10^19),
%e 1601963043212890626^9 + 1 == 5448818206787109377 (mod 10^19).
%Y Cf. A318379 (a_0), A318380 (a_1), A318381 (a_2), A318382 (a_3), A318383 (a_4), A318384 (a_5), A318385 (a_6), this sequence (a_7), A318409 (a_8), A318410 (a_9).
%K nonn,base
%O 0,1
%A _Seiichi Manyama_, Aug 25 2018