Sequence A001333 with last digits set to zero.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =10a(5) =40a(6) =90a(7) =230a(8) =570a(9) =1390a(10) =3360a(11) =8110a(12) =19600a(13) =47320a(14) =114240a(15) =275800a(16) =665850a(17) =1607520a(18) =3880890a(19) =9369310a(20) =22619530a(21) =54608390a(22) =131836320a(23) =318281030a(24) =768398400a(25) =1855077840a(26) =4478554080a(27) =10812186000a(28) =26102926090a(29) =63018038200