A257241 - cp's OEIS frontend

A257241 Irregular triangle read by rows: Stifel's version of the arithmetical triangle.

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	6
7	5
8	10
9	10
10	6
11	15
12	20
13	7
14	21
15	35
16	35
17	8
18	28
19	56
20	70
21	9
22	36
23	84
24	126
25	126
26	10
27	45
28	120
29	210
30	252
31	11
32	55
33	165
34	330
35	462
36	462
37	12
38	66
39	220
40	495
41	792
42	924
43	13
44	78
45	286
46	715
47	1287
48	1716
49	1716
50	14
51	91
52	364
53	1001
54	2002
55	3003
56	3432
57	15
58	105
59	455
60	1365
61	3003
62	5005
63	6435
64	6435

[1, 2, 3, 3, 4, 6, 5, 10, 10, 6, 15, 20, 7, 21, 35, 35, 8, 28, 56, 70, 9, 36, 84, 126, 126, 10, 45, 120, 210, 252, 11, 55, 165, 330, 462, 462, 12, 66, 220, 495, 792, 924, 13, 78, 286, 715, 1287, 1716, 1716, 14, 91, 364, 1001, 2002, 3003, 3432, 15, 105, 455, 1365, 3003, 5005, 6435, 6435]

cp's OEIS Frontend

A257241 Irregular triangle read by rows: Stifel's version of the arithmetical triangle.

Table of values

List of values