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A230964 as a simple table

na(n)
10
26
322
4200
51732
614384
7121696
81027464
98672840
1073227432
11618256792
125219942472
1344072147576
14372102417096
153141672058936
1626525234659400
17223953378903736
181890845334033992
1915964465905002424
20134788481690623048

[0,6,22,200,1732,14384,121696,1027464,8672840,
 73227432,618256792,5219942472,44072147576,
 372102417096,3141672058936,26525234659400,
 223953378903736,1890845334033992,
 15964465905002424,134788481690623048]