OFFSET
1,4
LINKS
Paolo Xausa, Table of n, a(n) for n = 1..11325 (antidiagonals 1..150 of the array, flattened).
FORMULA
EXAMPLE
Northwest corner:
0 1 2 3 4 5
1 0 0 0 0 0
2 0 0 0 0 0
3 0 0 0 0 0
4 0 0 0 0 0
MATHEMATICA
Array[Append[PadRight[{#}, #, 0], #]&, 15, 0] (* Paolo Xausa, Dec 21 2023 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Clark Kimberling, Sep 14 2008
STATUS
approved