A233303 - cp's OEIS frontend

A233303 Number of (3+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..3+1} nondecreasing.

n	a(n)
1	31
2	141
3	567
4	1986
5	6292
6	18205
7	48913
8	123084
9	292784
10	662512
11	1434508
12	2985639
13	5997455
14	11666253
15	22040149
16	40541549
17	72770415
18	127706638
19	219494579
20	370035418
21	612722058
22	997726253
23	1599424522
24	2526675993
25	3936943281

[31, 141, 567, 1986, 6292, 18205, 48913, 123084, 292784, 662512, 1434508, 2985639, 5997455, 11666253, 22040149, 40541549, 72770415, 127706638, 219494579, 370035418, 612722058, 997726253, 1599424522, 2526675993, 3936943281]

cp's OEIS Frontend

A233303 Number of (3+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..3+1} nondecreasing.

Table of values

List of values