a(1) = 999, a(n) is the number obtained by concatenating product of neighboring digits of the previous term.
A110401
a(1) = 999, a(n) is the number obtained by concatenating product of neighboring digits of the previous term.
Terms
- a(0) =999a(1) =8181a(2) =888a(3) =6464a(4) =242424a(5) =88888a(6) =64646464
External references
- oeis: A110401