登录

年终呼吁:请向OEIS基金会捐款支持OEIS的持续开发和维护。现在是我们的第61年,我们有超过378000个序列,我们已经获得了11000条引文(通常说“多亏了OEIS才发现”)。

A178665号作为一个简单的表

n个a(n)
01
10
20
1
40
50
60
70
80
90
100
110
120
130
140
151
160
170
181
190
200
210
220
231
240
250
261
271
280
290
301
310
320
330
340
351
360
370
382
391
400
411
422
430
440
451
460
471
480
490
50
510
520
532
541
550
560
571
581
591
600
611
624
630
640
654
661
670
681
691
701
710
720
732
74
750
761
775
780
790
802
811
822
830
841
854
862
870
882
895
900
910
92
930
941
950
960
975
981
990
1005
1014
1020
1031
1044
1051
1061
1071
1081
1095
1100
1110
1126
1132
1140
1152
116
1171
1180
1191
1202
1214
1220
1231
1248
1251
1260
1274
1282
1291
1300
1311
132
1332
1340
1352
1366
1370
1380
1395
1401
1411
1421
1431

[1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,1,0,0,1,1,0,0,1,0,0,0,0,1,0,0,2,1,0,1,2,0,0,1,0,1,0,0,3,0,0,2,1,0,0,1,1,1,0,1,4,0,0,4,1,0,1,1,1,0,0,2,3,0,1,5,0,0,2,1,2,0,1,4,2,0,2,5,0,0,3,0,1,0,0,5,1,0,5,4,0,1,4,1,1,1,1,5,0,0,6,2,0,2,3,1,0,1,2,4,0,1,8,1,0,4,2,1,0,1,3,2,0,2,6,0,0,5,1,1,1,1]