Sum of exponents in prime-power factorization of multinomial coefficient M(5n;2n,2n,n).

Terms

a(0) =0a(1) =3a(2) =6a(3) =8a(4) =10a(5) =12a(6) =14a(7) =19a(8) =17a(9) =18a(10) =21a(11) =24a(12) =24a(13) =29a(14) =27a(15) =29a(16) =27a(17) =31a(18) =29a(19) =33a(20) =35a(21) =37a(22) =39a(23) =41a(24) =40a(25) =40a(26) =45a(27) =45a(28) =43a(29) =48