A261711 - cp's OEIS frontend

A261711 Triangle read by rows: T(n,k) is the number of words over alphabet {0,1,2,3} having exactly k occurrences of the string 01, where n>=0 and k>=0.

n	a(n)
0	1
1	4
2	15
3	1
4	56
5	8
6	209
7	46
8	1
9	780
10	232
11	12
12	2911
13	1091
14	93
15	1
16	10864
17	4912
18	592
19	16
20	40545
21	21468
22	3366
23	156
24	1
25	151316
26	91824
27	17784
28	1200
29	20
30	564719
31	386373
32	89238
33	8010
34	235
35	1
36	2107560
37	1604984
38	430992
39	48624
40	2120
41	24
42	7865521
43	6598282
44	2021103
45	275724
46	16255
47	330
48	1

[1, 4, 15, 1, 56, 8, 209, 46, 1, 780, 232, 12, 2911, 1091, 93, 1, 10864, 4912, 592, 16, 40545, 21468, 3366, 156, 1, 151316, 91824, 17784, 1200, 20, 564719, 386373, 89238, 8010, 235, 1, 2107560, 1604984, 430992, 48624, 2120, 24, 7865521, 6598282, 2021103, 275724, 16255, 330, 1]

cp's OEIS Frontend

A261711 Triangle read by rows: T(n,k) is the number of words over alphabet {0,1,2,3} having exactly k occurrences of the string 01, where n>=0 and k>=0.

Table of values

List of values