A247184 - cp's OEIS frontend

A247184 a(0) = 0. a(n) is the number of distinct sums of two elements in [a(0), ... a(n-1)] chosen without replacement.

n	a(n)
0	0
1	0
2	1
3	2
4	4
5	7
6	11
7	15
8	20
9	26
10	32
11	40
12	48
13	57
14	65
15	73
16	81
17	90
18	98
19	106
20	114
21	123
22	132
23	147
24	157
25	170
26	190
27	202
28	223
29	236
30	251
31	270
32	291
33	314
34	338
35	361
36	380
37	398
38	421
39	443
40	471
41	495
42	520
43	544
44	567
45	592
46	616
47	639
48	663
49	692
50	720
51	749
52	781
53	819
54	852
55	885
56	913
57	948
58	987
59	1023
60	1055
61	1088

[0, 0, 1, 2, 4, 7, 11, 15, 20, 26, 32, 40, 48, 57, 65, 73, 81, 90, 98, 106, 114, 123, 132, 147, 157, 170, 190, 202, 223, 236, 251, 270, 291, 314, 338, 361, 380, 398, 421, 443, 471, 495, 520, 544, 567, 592, 616, 639, 663, 692, 720, 749, 781, 819, 852, 885, 913, 948, 987, 1023, 1055, 1088]

cp's OEIS Frontend

A247184 a(0) = 0. a(n) is the number of distinct sums of two elements in [a(0), ... a(n-1)] chosen without replacement.

Table of values

List of values