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A120213
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"a" values providing solution x < > b in A120211 (i.e. in y^2 = x*(a^2 - x)*( b^2 + x) with a, b legs in primitive Pythagorean triads.
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3
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4, 12, 12, 15, 15, 16, 20, 20, 21, 24, 24, 28, 28, 32, 33, 35, 36, 36, 39, 40, 40, 44, 44, 45, 48, 48, 51, 52, 52, 55, 56, 56, 57, 60, 60, 60, 60, 63, 64, 65, 68, 68, 69, 72, 72, 75, 76, 76, 77, 77
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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EXAMPLE
| Primitive Pythagorean triad: 4, 3, 5
Weierstrass equation. y^2 = x*( 4^2 - x)*( 3^2 + x)
Smallest integer solution (x, y) = (6,30)
As x <> b, a = 4 is in the sequence
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CROSSREFS
| Cf. A120210, A120211, A120212.
Sequence in context: A156681 A063608 A074258 * A005886 A096442 A195199
Adjacent sequences: A120210 A120211 A120212 * A120214 A120215 A120216
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KEYWORD
| nonn
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AUTHOR
| Giorgio Balzarotti, Paolo P. Lava (greenblue(AT)tiscali.it), Jun 10 2006
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