A104619 - cp's OEIS frontend

A104619 Write the natural numbers in base 16 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal.

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

[1, 3, 6, 10, 15, 2, 1, 1, 14, 3, 2, 2, 5, 12, 4, 4, 4, 13, 6, 7, 11, 6, 9, 9, 10, 7, 12, 13, 1, 0, 1, 10, 5, 1, 12, 8, 1, 1, 14, 1, 9, 7, 1, 4, 3, 1, 2, 2, 1, 3, 4, 2, 7, 9, 2, 14, 1, 2, 8, 12, 2, 5, 10, 3, 5, 11, 3, 8, 15, 3, 14, 6, 3, 7, 0, 4, 3, 13, 4, 2, 13, 4, 4, 0, 5, 9, 6, 5, 1, 15, 5, 12, 11, 6]

cp's OEIS Frontend

A104619 Write the natural numbers in base 16 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal.

Table of values

List of values

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

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

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