Row sums of Riordan array ((1-3x)/(1-4x+x^2), x(1-x)/(1-4x+x^2)).
A147722
Row sums of Riordan array ((1-3x)/(1-4x+x^2), x(1-x)/(1-4x+x^2)).
Terms
- a(0) =1a(1) =2a(2) =8a(3) =36a(4) =164a(5) =748a(6) =3412a(7) =15564a(8) =70996a(9) =323852a(10) =1477268a(11) =6738636a(12) =30738644a(13) =140215948a(14) =639602452a(15) =2917580364a(16) =13308696916a(17) =60708323852a(18) =276924225428
External references
- oeis: A147722