Decimal concatenation of sequence (n, n-1, ..., 2, 1, 2, ..., n-1, n).
A007942
Decimal concatenation of sequence (n, n-1, ..., 2, 1, 2, ..., n-1, n).
Terms
- a(0) =1a(1) =212a(2) =32123a(3) =4321234a(4) =543212345a(5) =65432123456
External references
- oeis: A007942