The sixth term of the greedy B_n set of natural numbers.

Terms

a(0) =5a(1) =20a(2) =71a(3) =153a(4) =366a(5) =668a(6) =1153a(7) =1822a(8) =3119a(9) =4448a(10) =6348a(11) =8559a(12) =11565a(13) =14976a(14) =21023a(15) =26220a(16) =33066a(17) =40306a(18) =49601a(19) =59354a(20) =76031a(21) =89248a(22) =106008a(23) =122909a(24) =143989a(25) =165196a(26) =200759a(27) =227660a(28) =261030a(29) =293736