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A109525 as a simple table

na(n)
00
12
22
34
44
59
616
731
856
9109
10209
11403
12773
131491
142873
155538
1610671
1720570
1839649
1976426
20147312
21283954
22547338
231055028
242033628
253919945
267555936
2714564535
2828074040
2954114453
30104308961
31201061987
32387559437
33747044835
341439975217

[0,2,2,4,4,9,16,31,56,109,209,403,773,1491,2873,
 5538,10671,20570,39649,76426,147312,283954,547338,
 1055028,2033628,3919945,7555936,14564535,28074040,
 54114453,104308961,201061987,387559437,747044835,
 1439975217]