First differences of A140495.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =3a(6) =3a(7) =6a(8) =6a(9) =9a(10) =9a(11) =18a(12) =18a(13) =18a(14) =45a(15) =36a(16) =45a(17) =99a(18) =81a(19) =108a(20) =216a(21) =189a(22) =243a(23) =486a(24) =432a(25) =540a(26) =1107a(27) =972a(28) =1215a(29) =2511