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A085699
Smallest multiple of n such that a(n) + a(n-1) is an n-th power.
0
1, 8, 117, 508, 32260, 229884, 19257287
OFFSET
1,2
COMMENTS
a(8) does not exist because no 8th power is congruent to a(7)=19257287 (mod 8).
EXAMPLE
1, 1+8, 8+117, 117+508 give 1,9,125,625... which are 1,3^2,5^3,5^4,...
CROSSREFS
Sequence in context: A231553 A291077 A056988 * A046914 A376124 A364984
KEYWORD
fini,full,nonn
AUTHOR
Amarnath Murthy, Jason Earls, Jul 18 2003
EXTENSIONS
Edited by Dean Hickerson, Jul 20 2003
STATUS
approved