Graham-Sloane-type lower bound on the size of a ternary (n,3,7) constant-weight code.

Terms

a(0) =9a(1) =61a(2) =243a(3) =732a(4) =1837a(5) =4056a(6) =8136a(7) =15149a(8) =26571a(9) =44374a(10) =71125a(11) =110094a(12) =165376a(13) =242014a(14) =346136a(15) =485103a(16) =667662a(17) =904109a(18) =1206463a(19) =1588650a(20) =2066688a(21) =2658897a(22) =3386099a(23) =4271843a(24) =5342629a(25) =6628148a(26) =8161525a(27) =9979578a(28) =12123079a(29) =14637028