a(n) = T(2n-1,n-2), T given by A026670. Also T(2n-1,n-2) = T(2n,n+2), T given by A026725 and T(2n,n-2), T given by A026736.
A026675
a(n) = T(2n-1,n-2), T given by A026670. Also T(2n-1,n-2) = T(2n,n+2), T given by A026725 and T(2n,n-2), T given by A026736.
Terms
- a(0) =1a(1) =6a(2) =29a(3) =131a(4) =575a(5) =2488a(6) =10681a(7) =45641a(8) =194467a(9) =827045a(10) =3512983a(11) =14909339a(12) =63239487a(13) =268127302a(14) =1136495965a(15) =4816202207a(16) =20406887583a(17) =86457399359a(18) =366263778659
External references
- oeis: A026675