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A061587
a(1) = 1, a(n)= number obtained by replacing each digit of a(n-1) with nine times its value.
16
1, 9, 81, 729, 631881, 5427972729, 45361863816318631881, 36452754972542772954279725427972729, 2754364518634536816318453618636318814536186381631845361863816318631881
OFFSET
1,2
COMMENTS
Each of the subsequences a(9n), a(9n-1), ..., and a(9n-8) converges to a different limit, if we consider the numbers as sequences of digits. - M. F. Hasler, Jun 24 2016
LINKS
PROG
(PARI) A061587(n=2, a=1, m=9)={while(n--, a=eval(concat(apply(t->Str(t), digits(a)*m)))); a} \\ If only the 2nd argument is given, then the operation is applied once to that argument. - M. F. Hasler, Jun 24 2016
KEYWORD
nonn,base,easy
AUTHOR
Amarnath Murthy, May 13 2001
EXTENSIONS
More terms from Larry Reeves (larryr(AT)acm.org) and Asher Auel, May 15 2001
STATUS
approved