OFFSET
0,1
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..999 [Offset changed to 0 by Georg Fischer, Mar 01 2022]
FORMULA
T(n, m) = 23^n + 23^m, for n >= 0 and m in [0..n].
Bivariate g.f.: (2 - 24*x) / ((1 - x) * (1 - 23*x) * (1 - 23*x*y)). - J. Douglas Morrison, Jul 29 2021
EXAMPLE
T(2,0) = 23^2 + 23^0 = 530.
Table begins:
2;
24, 46;
530, 552, 1058;
12168, 12190, 12696, 24334;
279842, 279864, 280370, 292008, 559682;
...
MATHEMATICA
With[{nn=30}, Take[Union[Total/@Tuples[23^Range[0, nn], 2]], nn]] (* Harvey P. Dale, Oct 16 2017 *)
CROSSREFS
KEYWORD
AUTHOR
Jeremy Gardiner, Jul 20 2002
STATUS
approved