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A046650 as a simple table

na(n)
21
31
42
54
614
749
8216
9984
104862
1124739
12130338
13701584
143852744
1521489836
16121525520
17695307888
184019381790
1923446201495
20137875564710
21816646459860
224868578092510
2329196022525905
24176022392938080
251066433501134560
266490009570139784
2739659537885087124
28243278423033093336
291497584057249141728
309249144367260811824

[1,1,2,4,14,49,216,984,4862,24739,130338,701584,
 3852744,21489836,121525520,695307888,4019381790,
 23446201495,137875564710,816646459860,
 4868578092510,29196022525905,176022392938080,
 1066433501134560,6490009570139784,
 39659537885087124,243278423033093336,
 1497584057249141728,9249144367260811824]