Invert transform applied three times to Pascal's triangle A007318.

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =8a(5) =4a(6) =16a(7) =48a(8) =48a(9) =16a(10) =64a(11) =256a(12) =384a(13) =256a(14) =64a(15) =256a(16) =1280a(17) =2560a(18) =2560a(19) =1280a(20) =256a(21) =1024a(22) =6144a(23) =15360a(24) =20480a(25) =15360a(26) =6144a(27) =1024a(28) =4096a(29) =28672