Sum of exponents in prime-power factorization of binomial(5n, 2n-1).

Terms

a(0) =1a(1) =5a(2) =4a(3) =8a(4) =6a(5) =10a(6) =11a(7) =13a(8) =11a(9) =15a(10) =13a(11) =16a(12) =16a(13) =18a(14) =18a(15) =20a(16) =18a(17) =20a(18) =18a(19) =25a(20) =21a(21) =23a(22) =22a(23) =27a(24) =24a(25) =30a(26) =28a(27) =28a(28) =28a(29) =31