a(n) is the smallest composite k such that Sum_{composites j = 4, ..., k} 1/j exceeds n.
A076751
a(n) is the smallest composite k such that Sum_{composites j = 4, ..., k} 1/j exceeds n.
Terms
- a(0) =16a(1) =63a(2) =216a(3) =715a(4) =2279a(5) =7102a(6) =21722a(7) =65558a(8) =195759a(9) =579465a(10) =1703072a(11) =4975222a(12) =14459492a(13) =41837580a(14) =120585504a(15) =346372172a(16) =991915208a(17) =2832896772a(18) =8071045528a(19) =22944211170
External references
- oeis: A076751