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A215331 as a simple table

na(n)
01
15
29
316
435
576
6190
7455
81156
92911
107438
1118992
1248902
13125968
14325975
15845202
162197690
175725854
1814951308
1939110371
20102490649
21269002564
22707096093
231861183847
244905172383
2512942843424

[1,5,9,16,35,76,190,455,1156,2911,7438,18992,
 48902,125968,325975,845202,2197690,5725854,
 14951308,39110371,102490649,269002564,707096093,
 1861183847,4905172383,12942843424]