A permutation of Motzkin numbers by reversal of indices in blocks of length 7.

Terms

a(0) =127a(1) =51a(2) =21a(3) =9a(4) =4a(5) =2a(6) =1a(7) =113634a(8) =41835a(9) =15511a(10) =5798a(11) =2188a(12) =835a(13) =323a(14) =142547559a(15) =50852019a(16) =18199284a(17) =6536382a(18) =2356779a(19) =853467a(20) =310572a(21) =208023278209a(22) =73007772802a(23) =25669818476a(24) =9043402501a(25) =3192727797a(26) =1129760415a(27) =400763223