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A272496 as a simple table

na(n)
61
77
884
9840
109870
11113652
121480248
1319699680
14286768482
154358914560
1671096721696
171216711960464
1822116370171896
19421629228820800
208473857766133760
21178260053918650704
223931319749640138856
2390499126549555707984
242174651142277047610176
2554390059451824183287200

[1,7,84,840,9870,113652,1480248,19699680,
 286768482,4358914560,71096721696,1216711960464,
 22116370171896,421629228820800,8473857766133760,
 178260053918650704,3931319749640138856,
 90499126549555707984,2174651142277047610176,
 54390059451824183287200]