A337946 - cp's OEIS frontend

A337946 a(1)=1; thereafter, a(n) is the smallest number such that the addition and multiplication tables for (a(1),...,a(n)) together contain n*(n+1) different entries (the maximum possible).

n	a(n)
1	1
2	3
3	7
4	12
5	22
6	30
7	47
8	61
9	85
10	113
11	126
12	177
13	193
14	246
15	279
16	321
17	341
18	428
19	499
20	571
21	616
22	686
23	754
24	854
25	975
26	1052
27	1150
28	1317
29	1376
30	1457
31	1513
32	1664
33	1761
34	1961
35	2307
36	2434
37	2591
38	2795
39	2843
40	3057
41	3226
42	3405
43	3508
44	3776
45	3930
46	4023
47	4196
48	4575
49	4731

[1, 3, 7, 12, 22, 30, 47, 61, 85, 113, 126, 177, 193, 246, 279, 321, 341, 428, 499, 571, 616, 686, 754, 854, 975, 1052, 1150, 1317, 1376, 1457, 1513, 1664, 1761, 1961, 2307, 2434, 2591, 2795, 2843, 3057, 3226, 3405, 3508, 3776, 3930, 4023, 4196, 4575, 4731]

cp's OEIS Frontend

A337946 a(1)=1; thereafter, a(n) is the smallest number such that the addition and multiplication tables for (a(1),...,a(n)) together contain n*(n+1) different entries (the maximum possible).

Table of values

List of values