The sequence denoted by j_n used in the calculation of A323260.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =3a(5) =13a(6) =54a(7) =216a(8) =884a(9) =3575a(10) =14527a(11) =58925a(12) =239168a(13) =970540a(14) =3938720a(15) =15984049a(16) =64866679a(17) =263242213a(18) =1068291334a(19) =4335346204a(20) =17593728716a(21) =71398977047a(22) =289751765259