Row sums of pendular triangle A122445.

Terms

a(0) =1a(1) =1a(2) =3a(3) =9a(4) =32a(5) =118a(6) =455a(7) =1803a(8) =7304a(9) =30104a(10) =125834a(11) =532154a(12) =2272728a(13) =9788310a(14) =42464315a(15) =185394551a(16) =813950824a(17) =3591328136a(18) =15916173734a(19) =70819784774a(20) =316254424144