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A023540 as a simple table

na(n)
01
126
2452
36622
488473
51117788
613616464
7161765924
81887776825
921743151430
10247985329956
112807195642706
1231593670364257
13353962564536152
143951485554056128
1543987455339016168
16488552227663629969

[1,26,452,6622,88473,1117788,13616464,161765924,
 1887776825,21743151430,247985329956,2807195642706,
 31593670364257,353962564536152,3951485554056128,
 43987455339016168,488552227663629969]