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A327284 Indices of terms of the Hofstadter Q-sequence (A005185) not used in generating a later term. 1
1, 216, 361, 429, 451, 599, 766, 774, 775, 778, 792, 793, 820, 849, 863, 882, 968, 1042, 1111, 1215, 1216, 1228, 1407, 1524, 1528, 1542, 1543, 1550, 1551, 1573, 1653, 1672, 1673, 1674, 1675, 1863, 1905, 1920, 1938, 1954, 2078, 2185, 2186, 2187, 2195, 2196, 2277 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Each term of the Q-sequence is the sum of two previous terms. This sequence gives the Q-sequence terms which appear never to be used as one of those two. In other words, a(n) != x - A005185(x-1), and a(n) != x - A005185(x-2).

LINKS

Benjamin Chaffin, Table of n, a(n) for n = 1..10000

CROSSREFS

Cf. A005185, A076701.

Sequence in context: A278976 A179419 A224549 * A043371 A304369 A074266

Adjacent sequences:  A327281 A327282 A327283 * A327285 A327286 A327287

KEYWORD

nonn

AUTHOR

Benjamin Chaffin, Sep 15 2019

STATUS

approved

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Last modified April 10 06:23 EDT 2020. Contains 333392 sequences. (Running on oeis4.)