A098754 Slowest increasing sequence of integers that alternately begin and end with 1.

1, 11, 12, 21, 100, 101, 102, 111, 112, 121, 122, 131, 132, 141, 142, 151, 152, 161, 162, 171, 172, 181, 182, 191, 192, 201, 1000, 1001, 1002, 1011, 1012, 1021, 1022, 1031, 1032, 1041, 1042, 1051, 1052, 1061, 1062, 1071, 1072, 1081, 1082, 1091, 1092, 1101

Offset

1,2

Links

Table of n, a(n) for n=1..48.

Crossrefs

Sequence in context: A132359 A131363 A089185 * A098752 A240763 A231871

Adjacent sequences: A098751 A098752 A098753 * A098755 A098756 A098757

Keyword

base,easy,nonn

Author

Eric Angelini, Oct 01 2004

Extensions

More terms from Sam Alexander, Jan 04 2005

More terms from Max Alekseyev, Jan 31 2010

Status

approved