A023536 - OEIS

A023536 as a simple table

n	a(n)
1	1
2	2
3	4
4	7
5	10
6	14
7	19
8	25
9	31
10	38
11	46
12	55
13	65
14	75
15	86
16	98
17	111
18	125
19	140
20	155
21	171
22	188
23	206
24	225
25	245
26	266
27	287
28	309
29	332
30	356
31	381
32	407
33	434
34	462
35	490
36	519
37	549
38	580
39	612
40	645
41	679
42	714
43	750
44	786
45	823
46	861
47	900
48	940
49	981
50	1023
51	1066
52	1110
53	1155

[1,2,4,7,10,14,19,25,31,38,46,55,65,75,86,98,111, 125,140,155,171,188,206,225,245,266,287,309,332, 356,381,407,434,462,490,519,549,580,612,645,679, 714,750,786,823,861,900,940,981,1023,1066,1110, 1155]