A065226 - cp's OEIS frontend

A065226 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the decagonal numbers. The final elements of the rows form a(n).

n	a(n)
0	1
1	2
2	5
3	9
4	4
5	10
6	17
7	25
8	7
9	17
10	28
11	40
12	1
13	15
14	30
15	46
16	63
17	81
18	15
19	35
20	56
21	78
22	101
23	125
24	24
25	50
26	77
27	105
28	134
29	164
30	20
31	52
32	85
33	119
34	154
35	190
36	227
37	33
38	72
39	112
40	153
41	195
42	238
43	282
44	30
45	76
46	123
47	171
48	220
49	270
50	321
51	3
52	56
53	110
54	165
55	221
56	278
57	336
58	395
59	4
60	65
61	127
62	190

[1, 2, 5, 9, 4, 10, 17, 25, 7, 17, 28, 40, 1, 15, 30, 46, 63, 81, 15, 35, 56, 78, 101, 125, 24, 50, 77, 105, 134, 164, 20, 52, 85, 119, 154, 190, 227, 33, 72, 112, 153, 195, 238, 282, 30, 76, 123, 171, 220, 270, 321, 3, 56, 110, 165, 221, 278, 336, 395, 4, 65, 127, 190]

cp's OEIS Frontend

A065226 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the decagonal numbers. The final elements of the rows form a(n).

Table of values

List of values

n	a(n)
0	1
1	2
2	5
3	9
4	4
5	10
6	17
7	25
8	7
9	17
10	28
11	40
12	1
13	15
14	30
15	46
16	63
17	81
18	15
19	35
20	56
21	78
22	101
23	125
24	24
25	50
26	77
27	105
28	134
29	164
30	20
31	52
32	85
33	119
34	154
35	190
36	227
37	33
38	72
39	112
40	153
41	195
42	238
43	282
44	30
45	76
46	123
47	171
48	220
49	270
50	321
51	3
52	56
53	110
54	165
55	221
56	278
57	336
58	395
59	4
60	65
61	127
62	190

n	a(n)
0	1
1	2
2	5
3	9
4	4
5	10
6	17
7	25
8	7
9	17
10	28
11	40
12	1
13	15
14	30
15	46
16	63
17	81
18	15
19	35
20	56
21	78
22	101
23	125
24	24
25	50
26	77
27	105
28	134
29	164
30	20
31	52
32	85
33	119
34	154
35	190
36	227
37	33
38	72
39	112
40	153
41	195
42	238
43	282
44	30
45	76
46	123
47	171
48	220
49	270
50	321
51	3
52	56
53	110
54	165
55	221
56	278
57	336
58	395
59	4
60	65
61	127
62	190

n	a(n)
0	1
1	2
2	5
3	9
4	4
5	10
6	17
7	25
8	7
9	17
10	28
11	40
12	1
13	15
14	30
15	46
16	63
17	81
18	15
19	35
20	56
21	78
22	101
23	125
24	24
25	50
26	77
27	105
28	134
29	164
30	20
31	52
32	85
33	119
34	154
35	190
36	227
37	33
38	72
39	112
40	153
41	195
42	238
43	282
44	30
45	76
46	123
47	171
48	220
49	270
50	321
51	3
52	56
53	110
54	165
55	221
56	278
57	336
58	395
59	4
60	65
61	127
62	190