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A026623 as a simple table

n a(n)
0 1
1 1
2 4
3 6
4 18
5 27
6 72
7 111
8 283
9 447
10 1112
11 1791
12 4381
13 7167
14 17305
15 28671
16 68497
17 114687
18 271560
19 458751
20 1077949
21 1835007
22 4283069
23 7340031
24 17031503
25 29360127
26 67768777
27 117440511
28 269797323
29 469762047
30 1074583315
31 1879048191

[1,1,4,6,18,27,72,111,283,447,1112,1791,4381,7167,
 17305,28671,68497,114687,271560,458751,1077949,
 1835007,4283069,7340031,17031503,29360127,
 67768777,117440511,269797323,469762047,1074583315,
 1879048191]

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Last modified May 19 13:24 EDT 2022. Contains 353833 sequences. (Running on oeis4.)