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”).

A030290 as a simple table

na(n)
00
11
22
33
44
55
67
78
816
918
1040
1145
1267
1398
14150
15204
16237
1744216
1846443
1978742
2079930
21130714
22173000
23185604
241000000
251304963
2610000000
2713049563
28100000000
29130495593
301000000000
311304955895
3210000000000
3313049558812
34100000000000
35130495588186
361000000000000
371304955880707

[0,1,2,3,4,5,7,8,16,18,40,45,67,98,150,204,237,
 44216,46443,78742,79930,130714,173000,185604,
 1000000,1304963,10000000,13049563,100000000,
 130495593,1000000000,1304955895,10000000000,
 13049558812,100000000000,130495588186,
 1000000000000,1304955880707]