A331395 - cp's OEIS frontend

A331395 Number of nonnegative integer matrices with total sum n, nonzero rows and distinct columns each with the same sum with columns in decreasing lexicographic order.

n	a(n)
1	1
2	3
3	5
4	21
5	17
6	281
7	65
8	3209
9	10853
10	47617
11	1025
12	3610317
13	4097
14	22361569
15	570275061
16	2515267681
17	65537
18	229801424781
19	262145
20	10805763650257
21	114290395025669
22	39654899669089
23	4194305
24	150858428803209493
25	140094551951590929
26	98672497472409697

[1, 3, 5, 21, 17, 281, 65, 3209, 10853, 47617, 1025, 3610317, 4097, 22361569, 570275061, 2515267681, 65537, 229801424781, 262145, 10805763650257, 114290395025669, 39654899669089, 4194305, 150858428803209493, 140094551951590929, 98672497472409697]

cp's OEIS Frontend

A331395 Number of nonnegative integer matrices with total sum n, nonzero rows and distinct columns each with the same sum with columns in decreasing lexicographic order.

Table of values

List of values