login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A004795 as a simple table

na(n)
11
21
31
42
51
64
72
86
95
102
1122
1210
1364
1464
15102
16126
1733
18220
191902
20132
212202
22604
232120
24942
2522768
264044
27234638
287436
29614482
308264
31107008
3223776
3311154697
344336
351152138
36129812
3737815814
38245272
3923068832
40341506
4112223534
42427260
4353970758
44170064
45133421946
464163944

[1,1,1,2,1,4,2,6,5,2,22,10,64,64,102,126,33,220,
 1902,132,2202,604,2120,942,22768,4044,234638,7436,
 614482,8264,107008,23776,11154697,4336,1152138,
 129812,37815814,245272,23068832,341506,12223534,
 427260,53970758,170064,133421946,4163944]