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A199899 as a simple table

na(n)
115
249
3111
4209
5351
6545
7799
81121
91519
102001
112575
123249
134031
144929
155951
167105
178399
189841
1911439
2013201
2115135
2217249
2319551
2422049
2524751
2627665
2730799
2834161
2937759
3041601
3145695
3250049
3354671
3459569
3564751
3670225
3775999
3882081
3988479
4095201

[15,49,111,209,351,545,799,1121,1519,2001,2575,
 3249,4031,4929,5951,7105,8399,9841,11439,13201,
 15135,17249,19551,22049,24751,27665,30799,34161,
 37759,41601,45695,50049,54671,59569,64751,70225,
 75999,82081,88479,95201]