a(n) = Sum_{i=1..A328404(n)} (A276086(n) mod prime(i))*A002110(i-1), where A276086 is the primorial base exp-function, and A328404(n) gives the length of A276086(n) in primorial base representation.
A391936
a(n) = Sum_{i=1..A328404(n)} (A276086(n) mod prime(i))*A002110(i-1), where A276086 is the primorial base exp-function, and A328404(n) gives the length of A276086(n) in primorial base representation.
Terms
- a(0) =1a(1) =4a(2) =1a(3) =6a(4) =25a(5) =18a(6) =5a(7) =2a(8) =1a(9) =60a(10) =91a(11) =180a(12) =3a(13) =34a(14) =151a(15) =90a(16) =1081a(17) =2160a(18) =185a(19) =1832a(20) =331a(21) =450a(22) =781a(23) =1350a(24) =1953a(25) =1594a(26) =1231a(27) =16110a(28) =21751a(29) =13260
External references
- oeis: A391936