A244148 - cp's OEIS frontend

A244148 The number of ways one can assign values to n arrays a_{1},...,a_{n} of increasing size (size of a_{1} is 1, size of a_{2} is 2, ..., size of a_{n} is n) using the numbers 1, ..., n(n+1)/2, distinctly, such that the positions of array a_{i} can only be assigned values in the interval ((n+1)-i),... , (n(n+1)/2-(n-i)).

n	a(n)
1	1
2	2
3	72
4	115200
5	13276569600
6	165253252792320000
7	312379127174190543667200000
8	120053472861445542607502662277529600000
9	12098873398276702490569569159619238449643520000000000
10	400639807706466477973460949403651522366500906696560470917120000000000

[1, 2, 72, 115200, 13276569600, 165253252792320000, 312379127174190543667200000, 120053472861445542607502662277529600000, 12098873398276702490569569159619238449643520000000000, 400639807706466477973460949403651522366500906696560470917120000000000]

cp's OEIS Frontend

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