login
A325593
Numbers having at least three representations as multinomial coefficients M(n;lambda), where lambda is a partition of n.
5
1, 6, 20, 30, 56, 60, 90, 105, 120, 210, 252, 360, 420, 462, 495, 504, 560, 630, 720, 756, 840, 990, 1260, 1320, 1365, 1540, 1680, 1716, 1980, 2520, 2970, 3003, 3360, 3960, 4290, 4620, 5040, 5460, 6006, 6435, 7140, 7560, 7920, 8190, 9240, 10080, 10296, 10626
OFFSET
1,2
COMMENTS
Numbers occurring at least three times in the triangle A036038.
LINKS
Pontus von Brömssen, Table of n, a(n) for n = 1..10000 (first 505 terms from Alois P. Heinz)
EXAMPLE
1 is in the sequence because M(0;0) = M(1;1) = M(2;2) = M(3;3) = ... = 1.
6 is in the sequence because M(6;5,1) = M(4;2,2) = M(3;1,1,1) = 6.
56 is in the sequence because M(56;55,1) = M(8;5,3) = M(8;6,1,1) = 56.
CROSSREFS
A376373 is a subsequence.
Sequence in context: A376874 A242341 A140738 * A376373 A226363 A253906
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Sep 06 2019
STATUS
approved