A112672 Bases arising in A112670.

2, 2, 3, 3, 4, 4, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 14, 14, 15, 16, 17, 18, 19, 20, 21, 21, 22, 23, 24, 25, 26, 27, 28, 29, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 61

Offset

2,1

Comments

Numbers appearing twice in this sequence are: {2, 3, 4, 9, 14, 21, 29, 38, 49, 61, 72, 88, 102, 119, 121, 137, 156, 178, 199, 222, 244, 270, 272, 296, 298, 323, 325, 354, 382, 386, 416, 449, 483, 516, 552, 589, 628, 666, 668, 708, 750, 752, 793, 795, 837, 839, 883, 885, 930, 933, 979, 1026, 1030, 1076, 1081, 1129, 1181, 1237, 1290, 1349, 1406, 1462, 1466, 1524, 1527, 1584, 1587, 1646, 1649, 1712, 1774, 1777, 1779, 1842, 1909, 1976, 1978, 2045, 2047, 2117, 2119, ...}. - Hans Havermann, Jan 10 2006

Numbers (>1) not appearing at all are: {120, 271, 297, 324, 385, 667, 751, 794, 838, 884, 931, 1029, 1080, 1463, 1526, 1585, 1647, 1775, 1778, 1977, 2046, 2118, ...}. - Hans Havermann, Jan 10 2006

Links

Table of n, a(n) for n=2..71.

Crossrefs

Sequence in context: A330560 A358466 A194210 * A025765 A029029 A025157

Adjacent sequences: A112669 A112670 A112671 * A112673 A112674 A112675

Keyword

nonn

Author

N. J. A. Sloane, Dec 30 2005

Status

approved