A192348 - cp's OEIS frontend

A192348 Constant term of the reduction (by x^2->x+1) of polynomial p(n,x) identified in Comments.

n	a(n)
1	1
2	0
3	4
4	4
5	36
6	88
7	432
8	1408
9	5776
10	20736
11	80320
12	297792
13	1132096
14	4242304
15	16028928
16	60276736
17	227287296
18	855703552
19	3224482816
20	12144337920
21	45752574976
22	172339107840
23	649223532544
24	2445572276224
25	9212566081536
26	34703459811328

[1, 0, 4, 4, 36, 88, 432, 1408, 5776, 20736, 80320, 297792, 1132096, 4242304, 16028928, 60276736, 227287296, 855703552, 3224482816, 12144337920, 45752574976, 172339107840, 649223532544, 2445572276224, 9212566081536, 34703459811328]

cp's OEIS Frontend

A192348 Constant term of the reduction (by x^2->x+1) of polynomial p(n,x) identified in Comments.

Table of values

List of values