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- #!/usr/bin/ruby
- # Largest prime factor of A001008(n), numerator of n-th harmonic number; a(1) = 1
- # https://oeis.org/A308971
- include('../../../factordb/auto.sf')
- func a(n) is cached {
- harmonic(n).nu
- }
- var fh = File('bfile.txt').open_w
- fh.autoflush(true)
- for n in (1..10000) {
- var row = "#{n} #{gpf(a(n)) || 1}"
- say row
- fh.say(row)
- }
- __END__
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