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

Terms

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