A275706 - cp's OEIS frontend

A275706 a(n) = Re([n]_{1+i}!), where [n]_q! is the q-factorial, i = sqrt(-1).

n	a(n)
0	1
1	1
2	2
3	1
4	-40
5	135
6	-860
7	20145
8	-137100
9	-6726225
10	-212460900
11	-3642898575
12	654642826500
13	-26505894416625
14	3335048243533500
15	-1368325090374591375
16	133951676745003682500
17	123266968248328746879375
18	63057521158814641016317500
19	17732380504905960076345280625

[1, 1, 2, 1, -40, 135, -860, 20145, -137100, -6726225, -212460900, -3642898575, 654642826500, -26505894416625, 3335048243533500, -1368325090374591375, 133951676745003682500, 123266968248328746879375, 63057521158814641016317500, 17732380504905960076345280625]

cp's OEIS Frontend

A275706 a(n) = Re([n]_{1+i}!), where [n]_q! is the q-factorial, i = sqrt(-1).

Table of values

List of values