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 A076542 Numbers n such that A068340(n)=+/-1. 6
 1, 2, 86, 89, 90, 133, 5235, 5236 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Presumably A068340(n)=0 only for n=10; so I looked for n's such that A068340(n)=+/-s; here s=1 (and n<=800000). For s=6, there's no solution at all! For s=8, n=34 (only 1 solution); for s=7, n={55, 56} (2 solutions); for s=9, n={5, 51, 52} (3 solutions) (for n up to 800000). LINKS CROSSREFS Cf. A068340. Sequence in context: A078166 A101578 A041881 * A226842 A177318 A280551 Adjacent sequences:  A076539 A076540 A076541 * A076543 A076544 A076545 KEYWORD easy,nonn AUTHOR Zak Seidov, Oct 19 2002 STATUS approved

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Last modified March 18 20:20 EDT 2018. Contains 300772 sequences. (Running on oeis4.)