login

A021764 as a simple table

na(n)
01
118
2215
32160
419821
5172638
61456915
712056220
898541641
9799142058
106448579215
1151871439880
12416407919461
133338534836278
1426744994007115
15214144960297140
161714090450201281
1713717400347223298
18109762678131820615

[1,18,215,2160,19821,172638,1456915,12056220,
 98541641,799142058,6448579215,51871439880,
 416407919461,3338534836278,26744994007115,
 214144960297140,1714090450201281,
 13717400347223298,109762678131820615]