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%I #19 Jul 15 2023 18:53:33
%S 0,0,0,21,445,5457,55576,527138,4824694,43484124
%N Number of sphenic triples up to 10^n.
%C The sphenic triples {1309, 1310, 1311}, {1885, 1886, 1887}, ... are counted once at a time.
%Y Cf. A007304, A215217, A066509, A215218, A215015.
%K nonn,more
%O 1,4
%A _Martin Renner_, Aug 06 2012
%E a(8)-a(10) from _Bert Dobbelaere_, Jul 15 2023
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