A325593 - OEIS

A325593

Numbers having at least three representations as multinomial coefficients M(n;lambda), where lambda is a partition of n.

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

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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