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A050193 a(n)=a(n-1)+a(n-2)-d, where d=a(n/3) if 3 divides n, else d=0; 2 initial terms. 0
1, 1, 1, 2, 3, 4, 7, 11, 17, 28, 45, 71, 116, 187, 300, 487, 787, 1270, 2057, 3327, 5377, 8704, 14081, 22774, 36855, 59629, 96467, 156096, 252563, 408631, 661194, 1069825, 1730974, 2800799, 4531773, 7332501, 11864274, 19196775 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..38.

CROSSREFS

Sequence in context: A222024 A222025 A222026 * A173173 A192669 A072164

Adjacent sequences:  A050190 A050191 A050192 * A050194 A050195 A050196

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified August 28 08:35 EDT 2015. Contains 261118 sequences.