Number of blunt polypons with n cells.

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =1a(5) =5a(6) =3a(7) =10a(8) =13a(9) =31a(10) =44a(11) =103a(12) =169a(13) =360a(14) =643a(15) =1317a(16) =2479a(17) =5036a(18) =9716a(19) =19592a(20) =38511a(21) =77465a(22) =153686a(23) =309093a(24) =617426a(25) =1243392a(26) =2496186a(27) =5035612