OFFSET
0,1
LINKS
T. D. Noe, Rows n = 0..100 of triangle, flattened
FORMULA
T(n,m) = 19^n + 19^m for n >= 0 and m in [0..n].
Bivariate g.f.: (2 - 20*x) / ((1 - x) * (1 - 19*x) * (1 - 19*x*y)). - J. Douglas Morrison, Jul 28 2021
EXAMPLE
T(2,0) = 19^2 + 19^0 = 362.
Table begins:
2;
20, 38;
362, 380, 722;
6860, 6878, 7220, 13718;
130322, 130340, 130682, 137180, 260642;
...
MATHEMATICA
Flatten[Table[Table[19^n + 19^m, {m, 0, n}], {n, 0, 7}]] (* T. D. Noe, Jun 18 2013 *)
Total/@Tuples[19^Range[0, 10], 2]//Union (* Harvey P. Dale, Jan 04 2019 *)
CROSSREFS
KEYWORD
AUTHOR
Jeremy Gardiner, Jul 20 2002
STATUS
approved