7-distance Pell sequence.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =3a(8) =3a(9) =5a(10) =5a(11) =7a(12) =7a(13) =9a(14) =13a(15) =15a(16) =23a(17) =25a(18) =37a(19) =39a(20) =55a(21) =65a(22) =85a(23) =111a(24) =135a(25) =185a(26) =213a(27) =295a(28) =343a(29) =465