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A278060 Relative of Hofstadter Q-sequence: a(n) = n for 1 <= n <= 8; a(n) = a(n-a(n-1)) + a(n-a(n-2)) for n > 8. 11

%I #12 Feb 22 2024 20:31:49

%S 1,2,3,4,5,6,7,8,3,9,10,5,11,6,7,12,14,10,8,14,18,12,15,8,23,13,10,17,

%T 13,25,16,19,20,13,19,29,18,17,30,24,24,20,23,26,20,27,24,26,38,13,28,

%U 38,30,20,42,35,19,45,30,32,29,45,23,32,40

%N Relative of Hofstadter Q-sequence: a(n) = n for 1 <= n <= 8; a(n) = a(n-a(n-1)) + a(n-a(n-2)) for n > 8.

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

%C This sequence has exactly 420 terms, since a(420)=430 and computing a(421) would refer to a(-9).

%H Nathan Fox, <a href="/A278060/b278060.txt">Table of n, a(n) for n = 1..420</a>

%H N. Fox, <a href="https://vimeo.com/191094180">Hofstadter-like Sequences over Nonstandard Integers</a>, Talk given at the Rutgers Experimental Mathematics Seminar, November 10 2016.

%Y Cf. A005185, A278056, A278057, A278058, A278059, A278061, A278062, A278063, A278064, A278065.

%K nonn,fini,full

%O 1,2

%A _Nathan Fox_, Nov 10 2016

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)