A261840 - cp's OEIS frontend

A261840 Number of compositions of n into distinct parts where each part i is marked with a word of length i over a binary alphabet whose letters appear in alphabetical order.

n	a(n)
0	1
1	2
2	3
3	16
4	21
5	50
6	205
7	292
8	587
9	1110
10	4535
11	5980
12	12447
13	20910
14	40195
15	142520
16	196291
17	372042
18	635081
19	1128872
20	1873245
21	6537466
22	8553639
23	16333532
24	26470861
25	46629886
26	73222631
27	127947300
28	385293581
29	518212198
30	939401193
31	1516760160
32	2564361235

[1, 2, 3, 16, 21, 50, 205, 292, 587, 1110, 4535, 5980, 12447, 20910, 40195, 142520, 196291, 372042, 635081, 1128872, 1873245, 6537466, 8553639, 16333532, 26470861, 46629886, 73222631, 127947300, 385293581, 518212198, 939401193, 1516760160, 2564361235]

cp's OEIS Frontend

A261840 Number of compositions of n into distinct parts where each part i is marked with a word of length i over a binary alphabet whose letters appear in alphabetical order.

Table of values

List of values