A295995 Numbers n such that there are precisely 15 groups of orders n and n + 1.

1863, 1971, 4292, 7624, 8180, 15140, 17875, 19524, 20180, 21020, 23732, 23751, 28371, 30124, 33032, 33939, 34532, 35427, 36620, 40071, 41444, 42579, 44739, 45128, 45603, 46052

Offset

1,1

Comments

Equivalently, lower member of consecutive terms of A294156.

Links

Table of n, a(n) for n=1..26.

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) = 15, A000001(n+1) = 15 }.

Example

1863 is in the sequence because A000001(1863) = A000001(1864) = 15, 1971 is in the sequence because A000001(1971) = A000001(1972) = 15 and 19524 is in the sequence because A000001(19524) = A000001(19525) = 15.

Crossrefs

Cf. A000001, A294156.

Sequence in context: A107526 A132202 A054815 * A237257 A252137 A204889

Adjacent sequences: A295992 A295993 A295994 * A295996 A295997 A295998

Keyword

nonn

Author

Muniru A Asiru, Dec 02 2017

Status

approved