A172098 - cp's OEIS frontend

A172098 Irregular triangle T(n, k) = [x^k]( p(n, x) ), where p(n, x) = x^(n-1)*p(n-1, x) + p(n-2, x) with p(0, x) = 1 and p(1, x) = 1 + x, read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1
32	1
33	1
34	1
35	1
36	2
37	2
38	2
39	1
40	2
41	1
42	1
43	1
44	1
45	1
46	1
47	1
48	1
49	1
50	1
51	1
52	2
53	1
54	2
55	2
56	2
57	2
58	2
59	3
60	2
61	2
62	1
63	2
64	1
65	1
66	1
67	1
68	1
69	1
70	1
71	1
72	1
73	1
74	1
75	1
76	2
77	2
78	3
79	2
80	3
81	2
82	3
83	2
84	3
85	3
86	3
87	3
88	2
89	3
90	2
91	2
92	1
93	2
94	1
95	1
96	1
97	1
98	1
99	1
100	1

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 3, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 2, 3, 2, 3, 2, 3, 3, 3, 3, 2, 3, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1]

cp's OEIS Frontend

A172098 Irregular triangle T(n, k) = [x^k]( p(n, x) ), where p(n, x) = x^(n-1)*p(n-1, x) + p(n-2, x) with p(0, x) = 1 and p(1, x) = 1 + x, read by rows.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1
32	1
33	1
34	1
35	1
36	2
37	2
38	2
39	1
40	2
41	1
42	1
43	1
44	1
45	1
46	1
47	1
48	1
49	1
50	1
51	1
52	2
53	1
54	2
55	2
56	2
57	2
58	2
59	3
60	2
61	2
62	1
63	2
64	1
65	1
66	1
67	1
68	1
69	1
70	1
71	1
72	1
73	1
74	1
75	1
76	2
77	2
78	3
79	2
80	3
81	2
82	3
83	2
84	3
85	3
86	3
87	3
88	2
89	3
90	2
91	2
92	1
93	2
94	1
95	1
96	1
97	1
98	1
99	1
100	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1
32	1
33	1
34	1
35	1
36	2
37	2
38	2
39	1
40	2
41	1
42	1
43	1
44	1
45	1
46	1
47	1
48	1
49	1
50	1
51	1
52	2
53	1
54	2
55	2
56	2
57	2
58	2
59	3
60	2
61	2
62	1
63	2
64	1
65	1
66	1
67	1
68	1
69	1
70	1
71	1
72	1
73	1
74	1
75	1
76	2
77	2
78	3
79	2
80	3
81	2
82	3
83	2
84	3
85	3
86	3
87	3
88	2
89	3
90	2
91	2
92	1
93	2
94	1
95	1
96	1
97	1
98	1
99	1
100	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1
32	1
33	1
34	1
35	1
36	2
37	2
38	2
39	1
40	2
41	1
42	1
43	1
44	1
45	1
46	1
47	1
48	1
49	1
50	1
51	1
52	2
53	1
54	2
55	2
56	2
57	2
58	2
59	3
60	2
61	2
62	1
63	2
64	1
65	1
66	1
67	1
68	1
69	1
70	1
71	1
72	1
73	1
74	1
75	1
76	2
77	2
78	3
79	2
80	3
81	2
82	3
83	2
84	3
85	3
86	3
87	3
88	2
89	3
90	2
91	2
92	1
93	2
94	1
95	1
96	1
97	1
98	1
99	1
100	1