Number of polyominoes consisting of 6 regular unit n-gons.

Terms

a(0) =12a(1) =35a(2) =118a(3) =82a(4) =118a(5) =269a(6) =585a(7) =985a(8) =1750a(9) =1438a(10) =1765a(11) =2718a(12) =4336a(13) =6040a(14) =8814a(15) =7678a(16) =8839a(17) =11876a(18) =16410a(19) =20970a(20) =27720a(21) =24998a(22) =27787a(23) =34763a(24) =44687a(25) =54133a(26) =67601a(27) =62252a(28) =67777a(29) =81066