OFFSET
0,1
LINKS
T. D. Noe, Rows n = 0..100 of triangle, flattened
FORMULA
T(n,m) = 17^n + 17^m, n = 0, 1, 2, 3, ..., m = 0, 1, 2, 3, ... n.
Bivariate g.f.: (2 - 18*x)/((1 - x)*(1 - 17*x)*(1 - 17*x*y)). - J. Douglas Morrison, Jul 26 2021
EXAMPLE
T(2,0) = 17^2 + 17^0 = 290.
Table T(n,m) begins:
2;
18, 34;
290, 306, 578;
4914, 4930, 5202, 9826;
83522, 83538, 83810, 88434, 167042;
...
MATHEMATICA
Flatten[Table[Table[17^n + 17^m, {m, 0, n}], {n, 0, 7}]] (* T. D. Noe, Jun 18 2013 *)
Union[Total/@Tuples[17^Range[0, 10], 2]] (* Harvey P. Dale, Apr 09 2015 *)
CROSSREFS
Cf. A001026 (powers of 17).
Equals twice A073221.
KEYWORD
AUTHOR
Jeremy Gardiner, Jul 20 2002
STATUS
approved