Sum of exponents in prime-power factorization of multinomial coefficient M(5n;3n,n,n).

Terms

a(0) =0a(1) =3a(2) =6a(3) =7a(4) =9a(5) =13a(6) =13a(7) =17a(8) =17a(9) =17a(10) =19a(11) =21a(12) =20a(13) =27a(14) =27a(15) =28a(16) =26a(17) =30a(18) =29a(19) =30a(20) =34a(21) =36a(22) =33a(23) =38a(24) =36a(25) =38a(26) =43a(27) =40a(28) =40a(29) =46