Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-6,...,6}.

A239556

Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-6,...,6}.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =8a(6) =16a(7) =31a(8) =60a(9) =117a(10) =228a(11) =441a(12) =860a(13) =1678a(14) =3267a(15) =6368a(16) =12413a(17) =24192a(18) =47158a(19) =91929a(20) =179190a(21) =349306a(22) =680925a(23) =1327341a(24) =2587450a(25) =5043845a(26) =9832184a(27) =19166364a(28) =37361945a(29) =72831417

External references