A004057 - cp's OEIS frontend

A004057 Expansion of (1-x)/( (1+x)(1-2x)(1-3x)(1-4x)).

n	a(n)
0	1
1	7
2	39
3	191
4	875
5	3843
6	16423
7	68887
8	285219
9	1170059
10	4768127
11	19336863
12	78141883
13	314953555
14	1266977751
15	5089412519
16	20422176467
17	81882328731
18	328110270895
19	1314184126255
20	5261965982571
21	21063553061987

[1, 7, 39, 191, 875, 3843, 16423, 68887, 285219, 1170059, 4768127, 19336863, 78141883, 314953555, 1266977751, 5089412519, 20422176467, 81882328731, 328110270895, 1314184126255, 5261965982571, 21063553061987]

cp's OEIS Frontend

A004057 Expansion of (1-x)/( (1+x)(1-2x)(1-3x)(1-4x)).

Table of values

List of values

cp's OEIS Frontend

A004057 Expansion of (1-x)/( (1+x)*(1-2*x)*(1-3*x)*(1-4*x)).

Table of values

List of values

A004057 Expansion of (1-x)/( (1+x)(1-2x)(1-3x)(1-4x)).