A098925 - cp's OEIS frontend

A098925 Distribution of the number of ways for a child to climb a staircase having r steps (one step or two steps at a time).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	1
9	3
10	4
11	1
12	1
13	6
14	5
15	1
16	4
17	10
18	6
19	1
20	1
21	10
22	15
23	7
24	1
25	5
26	20
27	21
28	8
29	1
30	1
31	15
32	35
33	28
34	9
35	1
36	6
37	35
38	56
39	36
40	10
41	1
42	1
43	21
44	70
45	84
46	45
47	11
48	1
49	7
50	56
51	126
52	120
53	55
54	12
55	1
56	1
57	28
58	126
59	210
60	165
61	66
62	13
63	1
64	8
65	84
66	252
67	330
68	220
69	78
70	14
71	1
72	1
73	36
74	210
75	462
76	495
77	286
78	91

[1, 1, 1, 1, 2, 1, 1, 3, 1, 3, 4, 1, 1, 6, 5, 1, 4, 10, 6, 1, 1, 10, 15, 7, 1, 5, 20, 21, 8, 1, 1, 15, 35, 28, 9, 1, 6, 35, 56, 36, 10, 1, 1, 21, 70, 84, 45, 11, 1, 7, 56, 126, 120, 55, 12, 1, 1, 28, 126, 210, 165, 66, 13, 1, 8, 84, 252, 330, 220, 78, 14, 1, 1, 36, 210, 462, 495, 286, 91]

cp's OEIS Frontend

A098925 Distribution of the number of ways for a child to climb a staircase having r steps (one step or two steps at a time).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	1
9	3
10	4
11	1
12	1
13	6
14	5
15	1
16	4
17	10
18	6
19	1
20	1
21	10
22	15
23	7
24	1
25	5
26	20
27	21
28	8
29	1
30	1
31	15
32	35
33	28
34	9
35	1
36	6
37	35
38	56
39	36
40	10
41	1
42	1
43	21
44	70
45	84
46	45
47	11
48	1
49	7
50	56
51	126
52	120
53	55
54	12
55	1
56	1
57	28
58	126
59	210
60	165
61	66
62	13
63	1
64	8
65	84
66	252
67	330
68	220
69	78
70	14
71	1
72	1
73	36
74	210
75	462
76	495
77	286
78	91

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	1
9	3
10	4
11	1
12	1
13	6
14	5
15	1
16	4
17	10
18	6
19	1
20	1
21	10
22	15
23	7
24	1
25	5
26	20
27	21
28	8
29	1
30	1
31	15
32	35
33	28
34	9
35	1
36	6
37	35
38	56
39	36
40	10
41	1
42	1
43	21
44	70
45	84
46	45
47	11
48	1
49	7
50	56
51	126
52	120
53	55
54	12
55	1
56	1
57	28
58	126
59	210
60	165
61	66
62	13
63	1
64	8
65	84
66	252
67	330
68	220
69	78
70	14
71	1
72	1
73	36
74	210
75	462
76	495
77	286
78	91

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	1
9	3
10	4
11	1
12	1
13	6
14	5
15	1
16	4
17	10
18	6
19	1
20	1
21	10
22	15
23	7
24	1
25	5
26	20
27	21
28	8
29	1
30	1
31	15
32	35
33	28
34	9
35	1
36	6
37	35
38	56
39	36
40	10
41	1
42	1
43	21
44	70
45	84
46	45
47	11
48	1
49	7
50	56
51	126
52	120
53	55
54	12
55	1
56	1
57	28
58	126
59	210
60	165
61	66
62	13
63	1
64	8
65	84
66	252
67	330
68	220
69	78
70	14
71	1
72	1
73	36
74	210
75	462
76	495
77	286
78	91