A240817 a(1) = 1 for n <= 5; thereafter a(n) = a(n-a(n-2))+a(n-a(n-5)) for n>3.

1, 1, 1, 1, 1, 2, 4, 6, 7, 8, 8, 7, 5, 8, 12, 12, 9, 7, 16, 11, 8, 13, 24, 14, 9, 14, 15, 9, 20, 16, 17, 21, 26, 13, 23, 40, 20

Offset: 1

Author

N. J. A. Sloane, Apr 15 2014

Keywords

• nonn
• fini
• full

Comments

Sequence dies (i.e. becomes undefined) after 37 terms.

Programs

Magma

[n le 5 select 1 else Self(n-Self(n-2))+Self(n-Self(n-5)): n in [1..37]]; // Vincenzo Librandi, Sep 10 2016