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”).

A283140 as a simple table

na(n)
01
11
21
3101
4101
510001
611101
71011101
81010101
9100010101
10111000001
1110111011001
1210100001101
131000100110001
141110001001101
15101110100100101
16101000100101101
1710001010001100101
1811100000010001001
191011101111011100101
201010000110011100001

[1,1,1,101,101,10001,11101,1011101,1010101,
 100010101,111000001,10111011001,10100001101,
 1000100110001,1110001001101,101110100100101,
 101000100101101,10001010001100101,
 11100000010001001,1011101111011100101,
 1010000110011100001]