A043970 Numbers k such that 1 and 4 occur juxtaposed in the base-9 representation of k but not of k+1.

13, 37, 94, 125, 175, 199, 256, 280, 341, 361, 418, 442, 499, 523, 580, 604, 661, 685, 742, 766, 823, 854, 904, 928, 985, 1009, 1133, 1147, 1171, 1228, 1252, 1309, 1333, 1390, 1414, 1471, 1495, 1552, 1583, 1633, 1657, 1714

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Crossrefs

Cf. A007095.

Sequence in context: A089528 A317986 A043190 * A183339 A331763 A155263

Adjacent sequences: A043967 A043968 A043969 * A043971 A043972 A043973

Keyword

nonn,base

Author

Clark Kimberling

Status

approved