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A002869
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Largest number in n-th row of triangle A019538.
(Formerly M1704 N0674)
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3
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1, 1, 2, 6, 36, 240, 1800, 16800, 191520, 2328480, 30240000, 479001600, 8083152000, 142702560000, 2731586457600, 59056027430400, 1320663933388800, 30575780537702400, 783699448602470400, 21234672840116736000, 591499300737945600000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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REFERENCES
| T. S. Motzkin, Sorting numbers ...: for a link to this paper see A000262.
T. S. Motzkin, Sorting numbers for cylinders and other classification numbers, in Combinatorics, Proc. Symp. Pure Math. 19, AMS, 1971, pp. 167-176.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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MAPLE
| f := proc(n) local t1, k; t1 := 0; for k to n do if t1 < A019538(n, k) then t1 := A019538(n, k) fi; od; t1; end;
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CROSSREFS
| Cf. A019538, A058583. A000670 gives sum of terms in n-th row.
Sequence in context: A086325 A074424 A002868 * A052845 A052832 A058583
Adjacent sequences: A002866 A002867 A002868 * A002870 A002871 A002872
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KEYWORD
| nonn,nice,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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