A180155 a(1)=1; thereafter, a(n) is the smallest integer k not yet in the sequence, such that k^3 contains in consecutive digits the decimal representation of a(n-1).

1, 5, 8, 2, 3, 7, 9, 13, 11, 45, 77, 53, 37, 15, 25, 50, 43, 29, 31, 39, 34, 70, 30, 67, 23, 47, 63, 55, 78, 83, 18, 44, 14, 52, 28, 12, 58, 87, 35, 33, 46, 36, 82, 24, 72, 38, 62, 64, 4, 16, 6, 19, 27, 32, 51, 57, 26, 21, 41, 81, 61, 56, 86, 92, 48, 22, 74, 42, 75, 91, 17, 49, 66, 124, 104, 134, 238, 155, 316, 185, 228, 364, 272, 103, 101, 106, 102, 217, 279, 359, 175

Offset

1,2

Links

Jean-Marc Falcoz, Table of n, a(n) for n = 1..10000

Example

a(1)=1
a(2)=5, because 5^3=125 which contains 1
...
a(8)=13
a(9)=11, because 11^3=1331, which contains 13
a(10)=45, because 45^3=91125, which contains 11
a(11)=77, because 77^3=456533, which contains 45

Crossrefs

Sequence in context: A021636 A011210 A245276 * A110989 A099736 A256453

Adjacent sequences: A180152 A180153 A180154 * A180156 A180157 A180158

Keyword

nonn,base

Author

Jean-Marc Falcoz, Jan 16 2011

Status

approved