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A278059 Relative of Hofstadter Q-sequence: a(n) = n for 1 <= n <= 7; a(n) = a(n-a(n-1)) + a(n-a(n-2)) for n > 7. 11
1, 2, 3, 4, 5, 6, 7, 3, 8, 9, 5, 10, 6, 7, 11, 13, 10, 8, 13, 17, 7, 16, 20, 7, 13, 19, 10, 16, 19, 12, 23, 25, 12, 24, 25, 15, 26, 30, 14, 28, 16, 26, 20, 15, 25, 30, 26, 24, 33, 29, 24, 36, 29, 21, 43, 31, 26, 35, 19, 29, 51, 17, 40, 33, 38, 28 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Similar to Hofstadter's Q-sequence A005185 but with different starting values.

Much like the Hofstadter Q-sequence, it is not known if this sequence is defined for all positive n.

a(n) exists for n <= 3*10^7.

LINKS

Nathan Fox, Table of n, a(n) for n = 1..10000

N. Fox, Hofstadter-like Sequences over Nonstandard Integers, Talk given at the Rutgers Experimental Mathematics Seminar, November 10 2016.

CROSSREFS

Cf. A005185, A278056, A278057, A278058, A278060, A278061, A278062, A278063, A278064, A278065.

Sequence in context: A279648 A066323 A245347 * A329606 A115871 A138221

Adjacent sequences:  A278056 A278057 A278058 * A278060 A278061 A278062

KEYWORD

nonn

AUTHOR

Nathan Fox, Nov 10 2016

STATUS

approved

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Last modified April 18 09:06 EDT 2021. Contains 343087 sequences. (Running on oeis4.)