A239561 - cp's OEIS frontend

A239561 Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-n,...,n}.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	8
6	16
7	31
8	63
9	125
10	252
11	504
12	1013
13	2027
14	4069
15	8141
16	16318
17	32650
18	65381
19	130801
20	261791
21	523677
22	1047780
23	2095796
24	4192533
25	8385623
26	16773321
27	33547917
28	67100362
29	134203614
30	268417029
31	536840509
32	1073702131
33	2147418493
34	4294882224
35	8589795592

[1, 1, 1, 2, 4, 8, 16, 31, 63, 125, 252, 504, 1013, 2027, 4069, 8141, 16318, 32650, 65381, 130801, 261791, 523677, 1047780, 2095796, 4192533, 8385623, 16773321, 33547917, 67100362, 134203614, 268417029, 536840509, 1073702131, 2147418493, 4294882224, 8589795592]

cp's OEIS Frontend

A239561 Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-n,...,n}.

Table of values

List of values