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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A036519 as a simple table

na(n)
121
21225
323220
4212226
522121226
62202322528
721222223210
8202222242820
922122952222920
10229222922294226
112221228522222920
12222322222025202925
13222212284222222920
1422222122841222222920
152092226022222222442221
1622222222042522220020225
17622222207421222222222253
1822222212062122272422225226

[21,1225,23220,212226,22121226,2202322528,
 21222223210,202222242820,22122952222920,
 229222922294226,2221228522222920,
 222322222025202925,222212284222222920,
 22222122841222222920,2092226022222222442221,
 22222222042522220020225,622222207421222222222253,
 22222212062122272422225226]