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A247722 as a simple table

na(n)
1440
21592
35796
421152
577236
6282384
71032952
83779018
913825712
1050587924
11185112244
12677378582
132478738332
149070607046
1533193012732
16121467142552
17444499919836
181626617553810
195952507849748
2021782859518402
2179713149293808

[440,1592,5796,21152,77236,282384,1032952,3779018,
 13825712,50587924,185112244,677378582,2478738332,
 9070607046,33193012732,121467142552,444499919836,
 1626617553810,5952507849748,21782859518402,
 79713149293808]