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A180244
Numbers whose square can be expressed as the sum of a square, a cube and a fourth power of three different numbers.
1
5, 8, 9, 12, 17, 19, 21, 22, 23, 25, 28, 31, 32, 33, 35, 37, 38, 39, 42, 44, 45, 46, 47, 51, 52, 53, 54, 55, 57, 59, 60, 61, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 77, 78, 79, 80, 81, 82, 83, 84, 85, 87, 88, 89, 90, 91, 93, 95, 96, 97, 98, 99, 100, 101, 103, 105, 107
OFFSET
1,1
COMMENTS
Subset of A180241, containing terms arising from different bases only.
EXAMPLE
a(5)=17 since 17^2 = 289 = 5^2+2^3+4^4 = 12^2+4^3+3^4; (5,2,4) and (12,4,3) are all different. [Corrected by Bruno Berselli, Aug 25 2010]
CROSSREFS
Sequence in context: A260256 A314573 A066467 * A072833 A229469 A314574
KEYWORD
nonn
AUTHOR
Carmine Suriano, Aug 19 2010
STATUS
approved