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A001353 as a simple table

na(n)
00
11
24
315
456
5209
6780
72911
810864
940545
10151316
11564719
122107560
137865521
1429354524
15109552575
16408855776
171525870529
185694626340
1921252634831
2079315912984
21296011017105
221104728155436
234122901604639
2415386878263120
2557424611447841
26214311567528244

[0,1,4,15,56,209,780,2911,10864,40545,151316,
 564719,2107560,7865521,29354524,109552575,
 408855776,1525870529,5694626340,21252634831,
 79315912984,296011017105,1104728155436,
 4122901604639,15386878263120,57424611447841,
 214311567528244]