A258472 - OEIS

A258472 as a simple table

n	a(n)
2	1
3	4
4	11
5	24
6	49
7	89
8	158
9	262
10	428
11	667
12	1033
13	1542
14	2289
15	3313
16	4765
17	6717
18	9427
19	13011
20	17882
21	24260
22	32763
23	43775
24	58268
25	76837
26	100953
27	131629
28	171003
29	220683
30	283877
31	363016
32	462794
33	587005
34	742332
35	934536
36	1173293
37	1467022
38	1829538
39	2273365
40	2817858

[1,4,11,24,49,89,158,262,428,667,1033,1542,2289, 3313,4765,6717,9427,13011,17882,24260,32763,43775, 58268,76837,100953,131629,171003,220683,283877, 363016,462794,587005,742332,934536,1173293, 1467022,1829538,2273365,2817858]