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%I #12 Oct 27 2023 22:05:37
%S 1,8,64,4832,32642416,241648321632848,1632848326424168482416643264,
%T 84824166432642416483216328486432641632848483224164832,
%U 64326416328484832241648321632848326424168482416643264483224164832848241664326432642416163284832642416
%N a(1) = 1, a(n)= number obtained by replacing each digit of a(n-1) with eight times its value.
%H John Cerkan, <a href="/A061586/b061586.txt">Table of n, a(n) for n = 1..12</a>
%t NestList[FromDigits[Flatten[IntegerDigits/@(8*IntegerDigits[#])]]&,1,10] (* _Harvey P. Dale_, Sep 22 2012 *)
%o (Python)
%o def A061586_first(n):
%o an = "1"
%o cnt = 1
%o a061586 = []
%o while cnt < n:
%o a061586.append(int(an))
%o newan = ""
%o for i in an:
%o newan += str(8*int(i))
%o an = newan
%o cnt += 1
%o a061586.append(int(an))
%o return a061586 # _John Cerkan_, May 25 2018
%Y Cf. A061581-A061587.
%K nonn,base,easy
%O 1,2
%A _Amarnath Murthy_, May 13 2001
%E More terms from Larry Reeves (larryr(AT)acm.org) and _Asher Auel_, May 15 2001