A177877 - cp's OEIS frontend

A177877 Triangle in which row n is derived from (1,2,3,...,n) dot (n,n-1,...,1) with additive carryovers.

n	a(n)
0	1
1	2
2	4
3	3
4	7
5	10
6	4
7	10
8	16
9	20
10	5
11	13
12	22
13	30
14	35
15	6
16	16
17	28
18	40
19	50
20	56
21	7
22	19
23	34
24	50
25	65
26	77
27	84
28	8
29	22
30	40
31	60
32	80
33	98
34	112
35	120
36	9
37	25
38	46
39	70
40	95
41	119
42	140
43	156
44	165
45	10
46	28
47	52
48	80
49	110
50	140
51	168
52	192
53	210
54	220

[1, 2, 4, 3, 7, 10, 4, 10, 16, 20, 5, 13, 22, 30, 35, 6, 16, 28, 40, 50, 56, 7, 19, 34, 50, 65, 77, 84, 8, 22, 40, 60, 80, 98, 112, 120, 9, 25, 46, 70, 95, 119, 140, 156, 165, 10, 28, 52, 80, 110, 140, 168, 192, 210, 220]

cp's OEIS Frontend

A177877 Triangle in which row n is derived from (1,2,3,...,n) dot (n,n-1,...,1) with additive carryovers.

Table of values

List of values

n	a(n)
0	1
1	2
2	4
3	3
4	7
5	10
6	4
7	10
8	16
9	20
10	5
11	13
12	22
13	30
14	35
15	6
16	16
17	28
18	40
19	50
20	56
21	7
22	19
23	34
24	50
25	65
26	77
27	84
28	8
29	22
30	40
31	60
32	80
33	98
34	112
35	120
36	9
37	25
38	46
39	70
40	95
41	119
42	140
43	156
44	165
45	10
46	28
47	52
48	80
49	110
50	140
51	168
52	192
53	210
54	220

n	a(n)
0	1
1	2
2	4
3	3
4	7
5	10
6	4
7	10
8	16
9	20
10	5
11	13
12	22
13	30
14	35
15	6
16	16
17	28
18	40
19	50
20	56
21	7
22	19
23	34
24	50
25	65
26	77
27	84
28	8
29	22
30	40
31	60
32	80
33	98
34	112
35	120
36	9
37	25
38	46
39	70
40	95
41	119
42	140
43	156
44	165
45	10
46	28
47	52
48	80
49	110
50	140
51	168
52	192
53	210
54	220

n	a(n)
0	1
1	2
2	4
3	3
4	7
5	10
6	4
7	10
8	16
9	20
10	5
11	13
12	22
13	30
14	35
15	6
16	16
17	28
18	40
19	50
20	56
21	7
22	19
23	34
24	50
25	65
26	77
27	84
28	8
29	22
30	40
31	60
32	80
33	98
34	112
35	120
36	9
37	25
38	46
39	70
40	95
41	119
42	140
43	156
44	165
45	10
46	28
47	52
48	80
49	110
50	140
51	168
52	192
53	210
54	220