login
This site is supported by donations to The OEIS Foundation.

 

Logo

The OEIS is looking to hire part-time people to help edit core sequences, upload scanned documents, process citations, fix broken links, etc. - Neil Sloane, njasloane@gmail.com

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A212815 a(n) = largest number k >= 7 such that A212813(k) = n. 6
8, 12, 54, 258280326 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Bellamy and Cadogan say that a(4) = 2*3^86093441, which is too large to include here.

REFERENCES

Bellamy, O. S.; Cadogan, C. C. Subsets of positive integers: their cardinality and maximality properties. Proceedings of the Tenth Southeastern Conference on Combinatorics, Graph Theory and Computing (Florida Atlantic Univ., Boca Raton, Fla., 1979), pp. 167--178, Congress. Numer., XXIII-XXIV, Utilitas Math., Winnipeg, Man., 1979. MR0561043 (82b:10006)

LINKS

Table of n, a(n) for n=0..3.

CROSSREFS

Cf. A036288, A212813, A212814, A212816, A212908, A212909.

Sequence in context: A009926 A022668 A286360 * A069186 A166625 A038290

Adjacent sequences:  A212812 A212813 A212814 * A212816 A212817 A212818

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 30 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified May 27 15:22 EDT 2017. Contains 287207 sequences.