A051243 Base 3 numbers d(1)...d(j) such that d(i) != d(j+1-i) for all but 2 values of i.

4, 8, 27, 29, 31, 34, 37, 39, 41, 43, 46, 49, 51, 53, 54, 55, 59, 62, 65, 66, 67, 71, 74, 77, 78, 79, 246, 248, 249, 251, 252, 254, 256, 259, 261, 263, 265, 268, 270, 272, 274, 277, 282, 284, 285, 287, 288, 290, 292, 295, 297, 299, 301, 304, 306, 308

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Crossrefs

Cf. A050876.

Sequence in context: A012952 A272588 A272228 * A356646 A100411 A065405

Adjacent sequences: A051240 A051241 A051242 * A051244 A051245 A051246

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Name corrected and missing initial terms inserted by Sean A. Irvine, Aug 20 2021

Status

approved