A diagonal above central terms of pendular trinomial triangle A122445, ignoring leading zeros.
A122451
A diagonal above central terms of pendular trinomial triangle A122445, ignoring leading zeros.
Terms
- a(0) =1a(1) =4a(2) =17a(3) =72a(4) =305a(5) =1300a(6) =5576a(7) =24068a(8) =104510a(9) =456332a(10) =2002675a(11) =8829892a(12) =39096653a(13) =173781548a(14) =775183764a(15) =3469084436a(16) =15571135682a(17) =70084045640a(18) =316242702258
External references
- oeis: A122451