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A088727
a(n) is the (n-1)st smallest number that is the sum of 2 distinct positive n-th powers.
0
5, 28, 97, 1025, 4160, 18571, 390626, 1953637, 9824674, 53022429, 2176782337, 13060702208, 78368947065, 471258726400, 2973697798081, 232630513987208, 1628413598172593, 11398896347634610, 79793365809239777, 559022701241487132, 4041442752425255185
OFFSET
2,1
EXAMPLE
Sums of 2 distinct k-th powers:
k=2: 5, 10, 13, 17, 20, 25, 26, ...
k=3: 9, 28, 35, 65, 72, 91, 126, ...
k=4: 17, 82, 97, 257, 272, 337, 626, ...
k=5: 33, 244, 275, 1025, 1056, 1267, 3126, ...
k=6: 65, 730, 793, 4097, 4160, 4825, 15626, ...
k=7: 129, 2188, 2315, 16385, 16512, 18571, 78126, ...
k=8: 257, 6562, 6817, 65537, 65792, 72097, 390626, ...
[edited by Jon E. Schoenfield, Mar 07 2018]
CROSSREFS
Cf. A004431, A024670, A088687. - Michel Marcus, Mar 07 2018
Sequence in context: A275709 A257093 A225261 * A027016 A034582 A124133
KEYWORD
nonn
AUTHOR
Cino Hilliard, Nov 23 2003
EXTENSIONS
Edited Name and more terms from Jon E. Schoenfield, Mar 04 2018
STATUS
approved