A112460 - cp's OEIS frontend

A112460 Absolute value of coefficient of term [x^(n-4)] in characteristic polynomial of maximum matrix A of size n X n, where n >= 4. Maximum matrix A(i,j) is MAX(i,j), where indices i and j run from 1 to n.

n	a(n)
4	4
5	39
6	207
7	795
8	2475
9	6633
10	15873
11	34749
12	70785
13	135850
14	247962
15	433602
16	730626
17	1191870
18	1889550
19	2920566
20	4412826
21	6532713
22	9493825
23	13567125
24	19092645
25	26492895
26	36288135
27	49113675
28	65739375
29	87091524
30	114277284
31	148611892
32	191648820
33	245213100
34	311438028

[4, 39, 207, 795, 2475, 6633, 15873, 34749, 70785, 135850, 247962, 433602, 730626, 1191870, 1889550, 2920566, 4412826, 6532713, 9493825, 13567125, 19092645, 26492895, 36288135, 49113675, 65739375, 87091524, 114277284, 148611892, 191648820, 245213100, 311438028]

cp's OEIS Frontend

A112460 Absolute value of coefficient of term [x^(n-4)] in characteristic polynomial of maximum matrix A of size n X n, where n >= 4. Maximum matrix A(i,j) is MAX(i,j), where indices i and j run from 1 to n.

Table of values

List of values