A228298 Generalized meta-Fibonacci sequence a(n) with parameters s=0 and k=7.

1, 2, 3, 4, 5, 6, 7, 7, 8, 9, 10, 11, 12, 13, 14, 14, 15, 16, 17, 18, 19, 20, 21, 21, 22, 23, 24, 25, 26, 27, 28, 28, 29, 30, 31, 32, 33, 34, 35, 35, 36, 37, 38, 39, 40, 41, 42, 42, 43, 44, 45, 46, 47, 48, 49, 49, 49, 50, 51, 52, 53, 54, 55, 56, 56

Offset: 1

Author

Michel Marcus, Aug 20 2013

Keywords

• nonn

Comments

It appears than a(n) = A020646(n)/7 for n>0 (verified up to n=700).

Links

• C. Deugau and F. Ruskey, Complete k-ary Trees and Generalized Meta-Fibonacci Sequences, J. Integer Seq., Vol. 12.

Crossrefs

Cf. A120503, A120507, A228297.

Programs

PARI

a(n)= {local(A); if(n<=7, max(0, n), A=vector(n, i, i); for(k=8, n, A[k]= A[k-A[k-1]] + A[k-1-A[k-2]] + A[k-2-A[k-3]] + A[k-3-A[k-4]] + A[k-4-A[k-5]] + A[k-5-A[k-6]] + A[k-6-A[k-7]];); A[n];);}