A356288 - cp's OEIS frontend

A356288 Sum of numbers in n-th upward diagonal of triangle the sum of {1; 2,3; 4,5,6; 7,8,9,10; ...} and {1; 2,3; 3,4,5; 4,5,6,7; ...}.

n	a(n)
1	2
2	4
3	13
4	20
5	40
6	55
7	90
8	116
9	170
10	210
11	287
12	344
13	448
14	525
15	660
16	760
17	930
18	1056
19	1265
20	1420
21	1672
22	1859
23	2158
24	2380
25	2730
26	2990
27	3395
28	3696
29	4160
30	4505
31	5032
32	5424
33	6018
34	6460
35	7125
36	7620
37	8360
38	8911
39	9730
40	10340
41	11242
42	11914
43	12903
44	13640
45	14720
46	15525
47	16700

[2, 4, 13, 20, 40, 55, 90, 116, 170, 210, 287, 344, 448, 525, 660, 760, 930, 1056, 1265, 1420, 1672, 1859, 2158, 2380, 2730, 2990, 3395, 3696, 4160, 4505, 5032, 5424, 6018, 6460, 7125, 7620, 8360, 8911, 9730, 10340, 11242, 11914, 12903, 13640, 14720, 15525, 16700]

cp's OEIS Frontend

A356288 Sum of numbers in n-th upward diagonal of triangle the sum of {1; 2,3; 4,5,6; 7,8,9,10; ...} and {1; 2,3; 3,4,5; 4,5,6,7; ...}.

Table of values

List of values