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Search: id:A068966
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| 6, 66, 3204, 6810, 37716, 72006, 182430, 532236, 370614, 2155134, 3203694, 6353634
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Eric Weisstein's World of Mathematics, Heronian Triangle.
Eric Weisstein's World of Mathematics, Heron's Formula.
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EXAMPLE
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A068964(3) = 24: [prime(24), prime(25), A068965(3)] = [89,97,170], with s = (89+97+170)/2 = 178: Area^2 = s*(s-89)*(s-81)*(s-170) = 178*89*81*8 = 10265616 = 3204*3204, therefore a(3) = 3204.
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CROSSREFS
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Cf. A046131, A055595, A068969.
Sequence in context: A122020 A126459 A054969 this_sequence A063039 A082781 A099147
Adjacent sequences: A068963 A068964 A068965 this_sequence A068967 A068968 A068969
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Mar 30 2002
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