Total sum of lengths of formula representations of n using addition, multiplication and the constant 1.

A214835

Total sum of lengths of formula representations of n using addition, multiplication and the constant 1.

Terms

    a(0) =1a(1) =3a(2) =10a(3) =42a(4) =144a(5) =564a(6) =2064a(7) =7944a(8) =30252a(9) =117000a(10) =453192a(11) =1768480a(12) =6917504a(13) =27163232a(14) =106923648a(15) =421931308a(16) =1668250408a(17) =6608054656a(18) =26215991648a(19) =104154492224a(20) =414324786144

External references