A176862 - cp's OEIS frontend

A176862 A symmetrical triangle sequence:t(n,m)=(-1)^m(n - m)!Binomial[n - 1, m] + (-1)^(n - m + 1)(n - (n - m + 1))!Binomial[n - 1, n - m + 1].

n	a(n)
3	2
4	5
5	5
6	37
7	-16
8	37
9	239
10	-50
11	-50
12	239
13	1801
14	-492
15	180
16	-492
17	1801
18	15119
19	-4186
20	714
21	714
22	-4186
23	15119
24	141121
25	-40336
26	8568
27	-2688
28	8568
29	-40336
30	141121
31	1451519
32	-423342
33	90504
34	-13104
35	-13104
36	90504
37	-423342
38	1451519

[2, 5, 5, 37, -16, 37, 239, -50, -50, 239, 1801, -492, 180, -492, 1801, 15119, -4186, 714, 714, -4186, 15119, 141121, -40336, 8568, -2688, 8568, -40336, 141121, 1451519, -423342, 90504, -13104, -13104, 90504, -423342, 1451519]

cp's OEIS Frontend

A176862 A symmetrical triangle sequence:t(n,m)=(-1)^m(n - m)!Binomial[n - 1, m] + (-1)^(n - m + 1)(n - (n - m + 1))!Binomial[n - 1, n - m + 1].

Table of values

List of values

cp's OEIS Frontend

A176862 A symmetrical triangle sequence:t(n,m)=(-1)^m*(n - m)!*Binomial[n - 1, m] + (-1)^(n - m + 1)*(n - (n - m + 1))!*Binomial[n - 1, n - m + 1].

Table of values

List of values

A176862 A symmetrical triangle sequence:t(n,m)=(-1)^m(n - m)!Binomial[n - 1, m] + (-1)^(n - m + 1)(n - (n - m + 1))!Binomial[n - 1, n - m + 1].