login

A007662 as a simple table

na(n)
01
11
22
33
44
55
612
721
832
945
10120
11231
12384
13585
141680
153465
166144
179945
1830240
1965835
20122880
21208845
22665280
231514205
242949120
255221125
2617297280
2740883535
2882575360
29151412625
30518918400
311267389585
322642411520
334996616625

[1,1,2,3,4,5,12,21,32,45,120,231,384,585,1680,
 3465,6144,9945,30240,65835,122880,208845,665280,
 1514205,2949120,5221125,17297280,40883535,
 82575360,151412625,518918400,1267389585,
 2642411520,4996616625]