Triangle read by rows: T(n,k) is the number of planar tanglegrams of size n with irreducible component of size k.

A371659

Triangle read by rows: T(n,k) is the number of planar tanglegrams of size n with irreducible component of size k.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =3a(8) =3a(9) =5a(10) =0a(11) =13a(12) =9a(13) =20a(14) =34a(15) =0a(16) =90a(17) =46a(18) =70a(19) =170a(20) =273a(21) =0a(22) =747a(23) =312a(24) =360a(25) =680a(26) =1638a(27) =2436a(28) =0a(29) =7040

External references