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A154704 as a simple table

na(n)
14
25
319
455
5271
61889
710529
859777
9101249
10406783
116581249
1212164095
1365071999
14652963841
156548416001
1613858918399
17145046192129
1875389157377
19943344975871
2023114453401601
21108772434771967
22101249475018751
23551785225781249
249740041658826751
25136182187711004671
264560483868737535

[4,5,19,55,271,1889,10529,59777,101249,406783,
 6581249,12164095,65071999,652963841,6548416001,
 13858918399,145046192129,75389157377,943344975871,
 23114453401601,108772434771967,101249475018751,
 551785225781249,9740041658826751,
 136182187711004671,4560483868737535]