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A278065 Relative of Hofstadter Q-sequence: a(n) = n for 1 <= n <= 13; a(n) = a(n-a(n-1)) + a(n-a(n-2)) for n > 13. 11
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 3, 14, 15, 5, 16, 6, 7, 17, 19, 10, 8, 19, 23, 12, 20, 14, 25, 11, 24, 28, 16, 13, 17, 15, 27, 20, 20, 34, 27, 24, 12, 45, 17, 27, 28, 36, 22, 28, 33, 26, 37, 30, 29, 32, 37, 31, 24, 40, 46, 15, 52, 35 (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, A278059, A278060, A278061, A278062, A278063, A278064.

Sequence in context: A297245 A043273 A268982 * A291041 A291766 A291579

Adjacent sequences:  A278062 A278063 A278064 * A278066 A278067 A278068

KEYWORD

nonn

AUTHOR

Nathan Fox, Nov 10 2016

STATUS

approved

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Last modified July 5 08:02 EDT 2020. Contains 335464 sequences. (Running on oeis4.)