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A243948 as a simple table

na(n)
01
12
28
336
4182
5964
65296
729832
8171238
9997244
105874992
1134937400
12209392796
131263258760
147664233696
1546726270992
16286089651718
171758215706476
1810841476837424
1967049791851672
20415784950498964
212584585251386296
2216101542183281312
23100511325748165488
24628579719997550044

[1,2,8,36,182,964,5296,29832,171238,997244,
 5874992,34937400,209392796,1263258760,7664233696,
 46726270992,286089651718,1758215706476,
 10841476837424,67049791851672,415784950498964,
 2584585251386296,16101542183281312,
 100511325748165488,628579719997550044]