The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A295994 Numbers n such that there are precisely 11 groups of orders n and n + 1. 7
 21483, 26091, 31436, 39195, 41643, 43371, 43803 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Equivalently, lower member of consecutive terms of A249554. LINKS Table of n, a(n) for n=1..7. H. U. Besche, B. Eick and E. A. O'Brien. A Millennium Project: Constructing Small Groups, Internat. J. Algebra and Computation, 12 (2002), 623-644. Gordon Royle, Numbers of Small Groups Index entries for sequences related to groups FORMULA Sequence is { n | A000001(n) = 11, A000001(n+1) = 11 }. EXAMPLE 21483 is in the sequence because A000001(21483) = A000001(21484) = 11, 26091 is in the sequence because A000001(26091) = A000001(26092) = 11 and 43803 is in the sequence because A000001(43803) = A000001(43804) = 11. CROSSREFS Cf. A000001, A249554. Sequence in context: A237409 A252102 A096554 * A063388 A252393 A211236 Adjacent sequences: A295991 A295992 A295993 * A295995 A295996 A295997 KEYWORD nonn,more AUTHOR Muniru A Asiru, Dec 02 2017 STATUS approved

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

Last modified December 9 13:48 EST 2023. Contains 367691 sequences. (Running on oeis4.)