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

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.

Sequence in context: A333131 A172587 A172581 * A366897 A202361 A015430

Adjacent sequences: A213531 A213532 A213533 * A213535 A213536 A213537

Keyword

nonn

Author

Martin Renner, Jun 13 2012

Status

approved