a(n) is the only number m such that m = pi(1^(1/n)) + pi(2^(1/n)) + ... + pi(m^(1/n)).

A171270

a(n) is the only number m such that m = pi(1^(1/n)) + pi(2^(1/n)) + ... + pi(m^(1/n)).

Terms

    a(0) =3a(1) =11a(2) =33a(3) =95a(4) =273a(5) =791a(6) =2313a(7) =6815a(8) =20193a(9) =60071a(10) =179193a(11) =535535a(12) =1602513a(13) =4799351a(14) =14381673a(15) =43112255a(16) =129271233a(17) =387682631a(18) =1162785753a(19) =3487832975a(20) =10462450353a(21) =31385253911a(22) =94151567433a(23) =282446313695a(24) =847322163873

External references