A050823 Even numbers in Hofstadter Q-sequence a(n)=a(n-a(n-1))+a(n-a(n-2)).

2, 4, 6, 6, 6, 8, 8, 8, 10, 10, 12, 12, 12, 12, 16, 14, 14, 16, 16, 16, 16, 20, 20, 20, 22, 22, 24, 24, 24, 24, 24, 32, 24, 30, 28, 26, 30, 30, 28, 32, 30, 32, 32, 32, 32, 40, 38, 40, 38, 40, 40, 42, 40, 44, 46, 44, 46, 48, 48, 48, 48, 48, 48, 64, 52, 54, 56, 48, 54, 54, 50, 60

Offset

1,1

Links

Table of n, a(n) for n=1..72.

Crossrefs

Cf. A005185.

Sequence in context: A302754 A225369 A296511 * A209863 A207540 A050825

Adjacent sequences: A050820 A050821 A050822 * A050824 A050825 A050826

Keyword

nonn,easy

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers

Status

approved