A213534 - OEIS

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A213534

Numbers k such that A047988(k) = A047988(k+1) = 4.

11872177333, 128907074146, 153592049893, 173277915346, 218180421013, 372099798262, 468167023417, 496310532853, 499081630666, 533381128933, 569616671893, 571632935206, 579535129813, 829161163813, 866580745333, 945276981106, 945635700586, 960970734706, 975903758266

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OFFSET

1,1

COMMENTS

Kantke calls these numbers "Vierwertzwillinge", i.e., value-4-twins.

REFERENCES

Thomas Kantke, Das Spiel Minimum, in: Spektrum der Wissenschaft Spezial Physik - Mathematik - Technik 2/2012, pp. 57-66.

LINKS

Table of n, a(n) for n=1..19.

Thomas Kantke, The game minimum and the decomposition of natural numbers, Spectrum of Science 4/1993, page 11.

CROSSREFS

Cf. A047987, A047988.