Binomial transform of A166242.

Terms

a(0) =1a(1) =3a(2) =9a(3) =21a(4) =45a(5) =99a(6) =225a(7) =507a(8) =1101a(9) =2295a(10) =4653a(11) =9381a(12) =19221a(13) =40491a(14) =87453a(15) =191205a(16) =417117a(17) =898119a(18) =1897125a(19) =3922977a(20) =7945713a(21) =15800367a(22) =30960765a(23) =60068235a(24) =116058981a(25) =224778159a(26) =439342677a(27) =871864317a(28) =1764029985a(29) =3643978479