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A073214
Sum of two powers of 19.
5
2, 20, 38, 362, 380, 722, 6860, 6878, 7220, 13718, 130322, 130340, 130682, 137180, 260642, 2476100, 2476118, 2476460, 2482958, 2606420, 4952198, 47045882, 47045900, 47046242, 47052740, 47176202, 49521980, 94091762, 893871740, 893871758, 893872100
OFFSET
0,1
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
Cf. A001029.
Equals twice A073222.
Sums of two powers of n: A073423 (0), A007395 (1), A173786 (2), A055235 (3), A055236 (4), A055237 (5), A055257 (6), A055258 (7), A055259 (8), A055260 (9), A052216 (10), A073211 (11), A194887 (12), A072390 (13), A055261 (16), A073213 (17), A073215 (23).
Sequence in context: A062133 A329729 A050684 * A293356 A269669 A293930
KEYWORD
easy,nonn,tabl
AUTHOR
Jeremy Gardiner, Jul 20 2002
STATUS
approved