Pascal triangle

[lanceTCT]

can anyone help me with...

123456
 12345
  1234
   123
    12
     1

[shacktar]

There are N rows (in this case, N = 6). If you index the rows as K = N, N - 1, N - 2, ..., 1, then row K has N - K spaces followed by the numbers 12...K.