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A261717 Arrange the 26 sporadic simple groups in increasing order; a(n) = number of sporadic simple groups of which the n-th largest sporadic simple group is a subquotient. 2
19, 12, 2, 16, 4, 10, 7, 1, 5, 7, 3, 1, 3, 1, 3, 4, 5, 3, 1, 3, 4, 2, 1, 2, 2, 1 (list; graph; refs; listen; history; text; internal format)



The sum of all elements of the sequence is the same as that of A263447.


J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, ATLAS of Finite Groups. Oxford Univ. Press, 1985. Page 238.


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

Wikipedia, Sporadic group


The sporadic group Fi_23 is a subquotient of the sporadic groups Fi_23 (itself), Fi_24, the Baby Monster and the Monster, so a(21) = 4.


Cf. A001228, A263447.

Sequence in context: A166525 A083156 A040344 * A323832 A306384 A196188

Adjacent sequences:  A261714 A261715 A261716 * A261718 A261719 A261720




Sven Simon, Charles R Greathouse IV, Franklin T. Adams-Watters, Oct 24 2015



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Last modified December 9 08:41 EST 2021. Contains 349627 sequences. (Running on oeis4.)