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A295994
Numbers n such that there are precisely 11 groups of orders n and n + 1.
7
21483, 26091, 31436, 39195, 41643, 43371, 43803
OFFSET
1,1
COMMENTS
Equivalently, lower member of consecutive terms of A249554.
LINKS
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.
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
Sequence in context: A237409 A252102 A096554 * A063388 A252393 A211236
KEYWORD
nonn,more
AUTHOR
Muniru A Asiru, Dec 02 2017
STATUS
approved