A085009 "Von Koch" sequence generated by {1,1,2}.

2, 0, 5, 8, 9, 8, 5, 0, 2, 2, 0, 5, 8, 9, 17, 23, 27, 29, 29, 27, 32, 35, 36, 35, 32, 27, 29, 29, 27, 23, 17, 9, 8, 5, 0, 2, 2, 0, 5, 8, 9, 8, 5, 0, 2, 2, 0, 5, 8, 9, 17, 23, 27, 29, 29, 27, 32, 35, 36, 44, 50, 54, 65, 74, 81, 86, 89, 90, 98, 104, 108, 110, 110, 108, 113, 116, 117, 116

Offset: 1

Author

Benoit Cloitre, Jun 17 2003

Keywords

• nonn

Comments

The graph of the sequence is similar to, for example, A071992

Crossrefs

Cf. A085006, A085007, A085009, A005536 ("Von Koch" sequence generated by {1, 2}).

Formula

a(n)= n+2 + sum(k=1, n, A085008(k))