Tanimoto triangle read by rows: T(n,k) = number of "parity-alternating permutations" (PAPS) of n symbols with k ascents.

A125300

Tanimoto triangle read by rows: T(n,k) = number of "parity-alternating permutations" (PAPS) of n symbols with k ascents.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =0a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =2a(12) =6a(13) =2a(14) =1a(15) =1a(16) =9a(17) =26a(18) =26a(19) =9a(20) =1a(21) =1a(22) =8a(23) =39a(24) =48a(25) =39a(26) =8a(27) =1a(28) =1a(29) =23

External references