A348023 - cp's OEIS frontend

A348023 a(n) = [x^n] Product_{k=0..2n-1} (x + (-1)^k k).

n	a(n)
0	1
1	-1
2	-5
3	51
4	1009
5	-17765
6	-636385
7	15875083
8	828730833
9	-26734633497
10	-1837389309405
11	72689703927555
12	6202163408816881
13	-290609121018808813
14	-29631450442239587305
15	1604436906627413556075
16	190333687041180914380065
17	-11692931012450127257939505
18	-1582217617564533519968758645

[1, -1, -5, 51, 1009, -17765, -636385, 15875083, 828730833, -26734633497, -1837389309405, 72689703927555, 6202163408816881, -290609121018808813, -29631450442239587305, 1604436906627413556075, 190333687041180914380065, -11692931012450127257939505, -1582217617564533519968758645]

cp's OEIS Frontend

A348023 a(n) = [x^n] Product_{k=0..2n-1} (x + (-1)^k k).

Table of values

List of values

cp's OEIS Frontend

A348023 a(n) = [x^n] Product_{k=0..2*n-1} (x + (-1)^k * k).

Table of values

List of values

A348023 a(n) = [x^n] Product_{k=0..2n-1} (x + (-1)^k k).