a(n) = Sum_{p in L(n)} 2^(pi(p) - 1) where L(n) is the set of all least primes in partitions of n into prime parts.
A333259
a(n) = Sum_{p in L(n)} 2^(pi(p) - 1) where L(n) is the set of all least primes in partitions of n into prime parts.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =2a(4) =1a(5) =5a(6) =3a(7) =9a(8) =3a(9) =3a(10) =7a(11) =19a(12) =7a(13) =35a(14) =11a(15) =7a(16) =7a(17) =71a(18) =15a(19) =135a(20) =15a(21) =15a(22) =23a(23) =263a(24) =31a(25) =15a(26) =47a(27) =15a(28) =31a(29) =527
External references
- oeis: A333259