A260023 a(1)=77; thereafter form the product of the digits of the previous term.

77, 49, 36, 18, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8

Offset

1,1

References

C. Pickover, Mazes for the Mind, St. Martin's Press, NY, 1992, p. 350.

Links

Table of n, a(n) for n=1..123.

Mathematica

NestList[Times@@IntegerDigits[#]&, 77, 150] (* Harvey P. Dale, Nov 09 2024 *)

Crossrefs

Sequence in context: A377337 A225522 A033397 * A165943 A217545 A344799

Adjacent sequences: A260020 A260021 A260022 * A260024 A260025 A260026

Keyword

nonn,base

Author

N. J. A. Sloane, Jul 14 2015

Status

approved