A060739 - cp's OEIS frontend

A060739 a(n) = (-1)^(n(n-1)/2) * Product_{k=0,...,n-1} (n+k-1)!/((k!)^2 * (n-1-k)!).

n	a(n)
0	1
1	1
2	-2
3	-36
4	7200
5	17640000
6	-560105280000
7	-239102222768640000
8	1408147589778024775680000
9	116620600756651855983415296000000
10	-137839975629646325813680872620851200000000
11	-2352568589682795058651211199786427114330521600000000

[1, 1, -2, -36, 7200, 17640000, -560105280000, -239102222768640000, 1408147589778024775680000, 116620600756651855983415296000000, -137839975629646325813680872620851200000000, -2352568589682795058651211199786427114330521600000000]

cp's OEIS Frontend

A060739 a(n) = (-1)^(n(n-1)/2) * Product_{k=0,...,n-1} (n+k-1)!/((k!)^2 * (n-1-k)!).

Table of values

List of values