A212001 - cp's OEIS frontend

A212001 Triangle read by rows: T(n,k) = sum of all parts of the last n-k+1 shells of n.

n	a(n)
1	1
2	4
3	3
4	9
5	8
6	5
7	20
8	19
9	16
10	11
11	35
12	34
13	31
14	26
15	15
16	66
17	65
18	62
19	57
20	46
21	31
22	105
23	104
24	101
25	96
26	85
27	70
28	39
29	176
30	175
31	172
32	167
33	156
34	141
35	110
36	71
37	270
38	269
39	266
40	261
41	250
42	235
43	204
44	165
45	94
46	420
47	419
48	416
49	411
50	400
51	385
52	354
53	315
54	244
55	150
56	616
57	615

[1, 4, 3, 9, 8, 5, 20, 19, 16, 11, 35, 34, 31, 26, 15, 66, 65, 62, 57, 46, 31, 105, 104, 101, 96, 85, 70, 39, 176, 175, 172, 167, 156, 141, 110, 71, 270, 269, 266, 261, 250, 235, 204, 165, 94, 420, 419, 416, 411, 400, 385, 354, 315, 244, 150, 616, 615]

cp's OEIS Frontend

A212001 Triangle read by rows: T(n,k) = sum of all parts of the last n-k+1 shells of n.

Table of values

List of values

n	a(n)
1	1
2	4
3	3
4	9
5	8
6	5
7	20
8	19
9	16
10	11
11	35
12	34
13	31
14	26
15	15
16	66
17	65
18	62
19	57
20	46
21	31
22	105
23	104
24	101
25	96
26	85
27	70
28	39
29	176
30	175
31	172
32	167
33	156
34	141
35	110
36	71
37	270
38	269
39	266
40	261
41	250
42	235
43	204
44	165
45	94
46	420
47	419
48	416
49	411
50	400
51	385
52	354
53	315
54	244
55	150
56	616
57	615

n	a(n)
1	1
2	4
3	3
4	9
5	8
6	5
7	20
8	19
9	16
10	11
11	35
12	34
13	31
14	26
15	15
16	66
17	65
18	62
19	57
20	46
21	31
22	105
23	104
24	101
25	96
26	85
27	70
28	39
29	176
30	175
31	172
32	167
33	156
34	141
35	110
36	71
37	270
38	269
39	266
40	261
41	250
42	235
43	204
44	165
45	94
46	420
47	419
48	416
49	411
50	400
51	385
52	354
53	315
54	244
55	150
56	616
57	615

n	a(n)
1	1
2	4
3	3
4	9
5	8
6	5
7	20
8	19
9	16
10	11
11	35
12	34
13	31
14	26
15	15
16	66
17	65
18	62
19	57
20	46
21	31
22	105
23	104
24	101
25	96
26	85
27	70
28	39
29	176
30	175
31	172
32	167
33	156
34	141
35	110
36	71
37	270
38	269
39	266
40	261
41	250
42	235
43	204
44	165
45	94
46	420
47	419
48	416
49	411
50	400
51	385
52	354
53	315
54	244
55	150
56	616
57	615