A261019 - cp's OEIS frontend

A261019 Irregular triangle read by rows: T(n,k) (0 <= k <= A261017(n)) = number of binary strings of length n such that the smallest number whose binary representation is not visible in the string is k.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	3
11	1
12	1
13	1
14	3
15	6
16	4
17	1
18	1
19	1
20	4
21	11
22	10
23	5
24	1
25	1
26	5
27	19
28	21
29	15
30	0
31	2
32	1
33	1
34	6
35	32
36	40
37	35
38	2
39	9
40	2
41	1
42	1
43	7
44	53
45	72
46	73
47	6
48	31
49	10
50	2
51	1
52	1
53	8
54	87
55	125
56	144
57	15
58	79
59	40
60	12
61	1
62	1
63	9
64	142
65	212
66	274
67	32
68	185
69	116
70	52
71	1
72	1
73	10
74	231
75	354
76	509
77	64
78	408
79	296
80	168
81	2
82	4

[1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 3, 6, 4, 1, 1, 1, 4, 11, 10, 5, 1, 1, 5, 19, 21, 15, 0, 2, 1, 1, 6, 32, 40, 35, 2, 9, 2, 1, 1, 7, 53, 72, 73, 6, 31, 10, 2, 1, 1, 8, 87, 125, 144, 15, 79, 40, 12, 1, 1, 9, 142, 212, 274, 32, 185, 116, 52, 1, 1, 10, 231, 354, 509, 64, 408, 296, 168, 2, 4]

cp's OEIS Frontend

A261019 Irregular triangle read by rows: T(n,k) (0 <= k <= A261017(n)) = number of binary strings of length n such that the smallest number whose binary representation is not visible in the string is k.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	3
11	1
12	1
13	1
14	3
15	6
16	4
17	1
18	1
19	1
20	4
21	11
22	10
23	5
24	1
25	1
26	5
27	19
28	21
29	15
30	0
31	2
32	1
33	1
34	6
35	32
36	40
37	35
38	2
39	9
40	2
41	1
42	1
43	7
44	53
45	72
46	73
47	6
48	31
49	10
50	2
51	1
52	1
53	8
54	87
55	125
56	144
57	15
58	79
59	40
60	12
61	1
62	1
63	9
64	142
65	212
66	274
67	32
68	185
69	116
70	52
71	1
72	1
73	10
74	231
75	354
76	509
77	64
78	408
79	296
80	168
81	2
82	4

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	3
11	1
12	1
13	1
14	3
15	6
16	4
17	1
18	1
19	1
20	4
21	11
22	10
23	5
24	1
25	1
26	5
27	19
28	21
29	15
30	0
31	2
32	1
33	1
34	6
35	32
36	40
37	35
38	2
39	9
40	2
41	1
42	1
43	7
44	53
45	72
46	73
47	6
48	31
49	10
50	2
51	1
52	1
53	8
54	87
55	125
56	144
57	15
58	79
59	40
60	12
61	1
62	1
63	9
64	142
65	212
66	274
67	32
68	185
69	116
70	52
71	1
72	1
73	10
74	231
75	354
76	509
77	64
78	408
79	296
80	168
81	2
82	4

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	3
11	1
12	1
13	1
14	3
15	6
16	4
17	1
18	1
19	1
20	4
21	11
22	10
23	5
24	1
25	1
26	5
27	19
28	21
29	15
30	0
31	2
32	1
33	1
34	6
35	32
36	40
37	35
38	2
39	9
40	2
41	1
42	1
43	7
44	53
45	72
46	73
47	6
48	31
49	10
50	2
51	1
52	1
53	8
54	87
55	125
56	144
57	15
58	79
59	40
60	12
61	1
62	1
63	9
64	142
65	212
66	274
67	32
68	185
69	116
70	52
71	1
72	1
73	10
74	231
75	354
76	509
77	64
78	408
79	296
80	168
81	2
82	4