a(n) = decimal concatenation of n (once), n-1 (twice), n-2 (3 times), ..., 1 (n times).
A323426
a(n) = decimal concatenation of n (once), n-1 (twice), n-2 (3 times), ..., 1 (n times).
Terms
- a(0) =1a(1) =211a(2) =322111a(3) =4332221111
External references
- oeis: A323426