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A247851 as a simple table

na(n)
0-120
1184
2-824
314136
4150664
5717880
62389704
76412216
814857096
930921144
1059271880
11106439224
12181253256
13295328056
14463591624
15704861880
161042468744
171504922296
182126627016
192948642104
204019487880
215395998264
227144219336
239340353976
2412071752584

[-120,184,-824,14136,150664,717880,2389704,
 6412216,14857096,30921144,59271880,106439224,
 181253256,295328056,463591624,704861880,
 1042468744,1504922296,2126627016,2948642104,
 4019487880,5395998264,7144219336,9340353976,
 12071752584]