A062844 Numbers that, when expressed in some base, are the concatenation of numbers in two other bases.

10, 11, 14, 15, 30, 31, 32, 36, 39, 40, 41, 42, 43, 44, 48, 49, 50, 58, 60, 62, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 78, 80, 84, 85, 86, 87, 88, 89, 90, 91, 94, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 116, 117, 118, 119, 120, 121, 122, 123, 130

Offset

1,1

Links

Table of n, a(n) for n=1..62.

Example

10 in base 2 is 1010, which is the concatenation of two 10's in base 10

Crossrefs

Sequence in context: A373646 A335237 A214864 * A144980 A261713 A244283

Adjacent sequences: A062841 A062842 A062843 * A062845 A062846 A062847

Keyword

base,easy,nonn

Author

Erich Friedman, Jul 21 2001

Status

approved