A061587 a(1) = 1, a(n)= number obtained by replacing each digit of a(n-1) with nine times its value.

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

Indranil Ghosh, Table of n, a(n) for n = 1..13

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

Crossrefs

Cf. A061581 - A061586, A061511-A061522, A061746-A061750.

Sequence in context: A240945 A158779 A047901 * A033145 A158762 A101601

Adjacent sequences: A061584 A061585 A061586 * A061588 A061589 A061590

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