A051247 Binary numbers d(1)...d(j) such that d(i) = d(j+1-k) for all but 4 values of i.

10, 12, 18, 22, 24, 28, 34, 36, 39, 40, 43, 46, 48, 53, 54, 57, 58, 60, 66, 68, 71, 74, 76, 79, 80, 83, 86, 88, 91, 94, 96, 101, 102, 104, 109, 110, 113, 114, 116, 121, 122, 124, 130, 132, 135, 136, 139, 141, 144, 147, 149, 154, 156

Offset

1,1

Comments

Each number becomes a palindrome by changing two digits.

Links

Table of n, a(n) for n=1..53.

Crossrefs

Cf. A051244, A050874.

Sequence in context: A129120 A134516 A144363 * A242335 A050579 A255845

Adjacent sequences: A051244 A051245 A051246 * A051248 A051249 A051250

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Name corrected by Sean A. Irvine, Aug 20 2021

Status

approved