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”).

A371087 as a simple table

na(n)
11
21
31
40
51
61
71
80
91
101
111
120
131
141
151
160
171
180
191
200
211
221
231
240
251
261
270
280
291
301
311
320
331
341
351
360
371
381
391
400
411
421
431
440
451
461
471
480
491
501
511
520
531
540
551
560
571
581
591
600
611
621
631
640
651
661
671
680
691
701
711
720
731
741
751
760
771
781
791
800
810
821
831
840
851
861
871
880
891
900
911
920
931
941
951
960
971
981
991
1000
1011
1021
1031
1040
1051
1061
1071
1080
1091
1101
1111
1120
1131
1141
1151
1160
1171
1181
1191
1200
1210
1221
1231
1240
1250

[1,1,1,0,1,1,1,0,1,1,1,0,1,1,1,0,1,0,1,0,1,1,1,0,
 1,1,0,0,1,1,1,0,1,1,1,0,1,1,1,0,1,1,1,0,1,1,1,0,1,
 1,1,0,1,0,1,0,1,1,1,0,1,1,1,0,1,1,1,0,1,1,1,0,1,1,
 1,0,1,1,1,0,0,1,1,0,1,1,1,0,1,0,1,0,1,1,1,0,1,1,1,
 0,1,1,1,0,1,1,1,0,1,1,1,0,1,1,1,0,1,1,1,0,0,1,1,0,
 0]