A050194 a(n)=a(n-1)+a(n-2)-d, where d=a(n/4) if 4 divides n, else d=0; 2 initial terms.

1, 1, 2, 2, 4, 6, 10, 15, 25, 40, 65, 103, 168, 271, 439, 708, 1147, 1855, 3002, 4853, 7855, 12708, 20563, 33265, 53828, 87093, 140921, 228004, 368925, 596929, 965854, 1562768, 2528622, 4091390, 6620012, 10711377, 17331389

Offset

1,3

Links

Table of n, a(n) for n=1..37.

Crossrefs

Sequence in context: A276059 A034410 A192682 * A288006 A228807 A262258

Adjacent sequences: A050191 A050192 A050193 * A050195 A050196 A050197

Keyword

nonn

Author

Clark Kimberling

Status

approved