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A259373 as a simple table

na(n)
01
11
24
3108
467500
51134472500
62009787236572500
7343390991123754492187500
818843880602308850038793150000000000
9370904101895245095313565571450000000000000000000
106335115544513765517772271190776403515352524800000000000000000000

[1,1,4,108,67500,1134472500,2009787236572500,
 343390991123754492187500,
 18843880602308850038793150000000000,
 370904101895245095313565571450000000000000000000,
 63351155445137655177722711907764035153525248000000\
 00000000000000]