Least m such that Phi-Composite-Harmonic series Sum_{k=1..m} 1/A000010(A002808(k)) >= n.
A074470
Least m such that Phi-Composite-Harmonic series Sum_{k=1..m} 1/A000010(A002808(k)) >= n.
Terms
- a(0) =2a(1) =7a(2) =16a(3) =31a(4) =60a(5) =113a(6) =205a(7) =371a(8) =663a(9) =1176a(10) =2069a(11) =3631a(12) =6341a(13) =11039a(14) =19159a(15) =33164a(16) =57287a(17) =98763a(18) =169967a(19) =292061a(20) =501165a(21) =858892a(22) =1470334a(23) =2514423a(24) =4295912a(25) =7333264a(26) =12508213a(27) =21319360a(28) =36312685a(29) =61811287
External references
- oeis: A074470