login

A089849 as a simple table

na(n)
01
11
22
31
46
52
620
75
870
914
10252
1142
12924
13132
143432
15429
1612870
171430
1848620
194862
20184756
2116796
22705432
2358786
242704156
25208012
2610400600
27742900
2840116600
292674440
30155117520
319694845
32601080390
3335357670
342333606220
35129644790

[1,1,2,1,6,2,20,5,70,14,252,42,924,132,3432,429,
 12870,1430,48620,4862,184756,16796,705432,58786,
 2704156,208012,10400600,742900,40116600,2674440,
 155117520,9694845,601080390,35357670,2333606220,
 129644790]