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

Terms

a(0) =2a(1) =5a(2) =5a(3) =7a(4) =9a(5) =10a(6) =11a(7) =14a(8) =13a(9) =14a(10) =14a(11) =15a(12) =17a(13) =18a(14) =19a(15) =20a(16) =19a(17) =21a(18) =18a(19) =25a(20) =26a(21) =21a(22) =24a(23) =26a(24) =25a(25) =30a(26) =28a(27) =28a(28) =31a(29) =32