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Numbers that are the sum of 7 positive 9th powers.
31

%I #12 Aug 02 2020 21:22:24

%S 7,518,1029,1540,2051,2562,3073,3584,19689,20200,20711,21222,21733,

%T 22244,22755,39371,39882,40393,40904,41415,41926,59053,59564,60075,

%U 60586,61097,78735,79246,79757,80268,98417,98928,99439,118099,118610,137781,262150,262661,263172,263683

%N Numbers that are the sum of 7 positive 9th powers.

%H David A. Corneth, <a href="/A003396/b003396.txt">Table of n, a(n) for n = 1..10000</a>

%e From _David A. Corneth_, Aug 02 2020: (Start)

%e 84634171 is in the sequence as 84634171 = 2^9 + 2^9 + 3^9 + 5^9 + 5^9 + 7^9 + 7^9.

%e 257513501 is in the sequence as 257513501 = 3^9 + 4^9 + 5^9 + 7^9 + 7^9 + 7^9 + 8^9.

%e 428037777 is in the sequence as 428037777 = 1^9 + 2^9 + 2^9 + 2^9 + 4^9 + 7^9 + 9^9. (End)

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_