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oeis-research
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Marius A. Burtea
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Triangular numbers whose arithmetic derivative is also a triangular number
trizen 53ebc848c8 new file: oeis-research/Kevin Ryde/a(1) = 1 and thereafter a(n) = 2*prime(a(n-1))/prog.sf 2 years ago
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prog.pl 53ebc848c8 new file: oeis-research/Kevin Ryde/a(1) = 1 and thereafter a(n) = 2*prime(a(n-1))/prog.sf 2 years ago