Sequence shifts left when Weigh transform is applied four times with a(n) = n for n<2.

A316104

Sequence shifts left when Weigh transform is applied four times with a(n) = n for n<2.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =1a(4) =5a(5) =15a(6) =55a(7) =210a(8) =826a(9) =3306a(10) =13511a(11) =55922a(12) =234344a(13) =991701a(14) =4233301a(15) =18204973a(16) =78803016a(17) =343074124a(18) =1501253960a(19) =6599380039a(20) =29129716885a(21) =129056936567a(22) =573707565933

External references