A070794 -id:A070794 - cp's OEIS frontend

A070793 Integers n such that the 'Reverse and Add!' trajectory of n joins the trajectory of 9.

9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 198, 297, 396, 495, 594, 693, 792, 891, 990, 1017, 1035, 1044, 1089, 1107, 1125, 1134, 1179, 1215, 1224, 1269, 1305, 1314, 1359, 1404, 1449, 1539, 1629, 1719, 1809, 1899, 1989, 2016, 2034, 2043, 2088, 2106, 2124

Offset: 1

Klaus Brockhaus, May 07 2002

			The trajectory of 18 is part of the trajectory of 9; the trajectory of 1215 joins the trajectory of 9 at 40293 after 3 steps.

Index entries for sequences related to Reverse and Add!

Cf. A070788 - A070792, A070794 - A070798, A063049.

limit = 10^3; x = NestList[ # + IntegerReverse[#] &, 9, limit];
Select[Range[2124],
 Intersection[NestList[ # + IntegerReverse[#] &, #, limit],
x] != {} &] (* Robert Price, Oct 20 2019 *)

A070795 Integers n such that the 'Reverse and Add!' trajectory of n joins the trajectory of 102.

Original entry on oeis.org

102, 105, 150, 156, 201, 204, 255, 300, 303, 309, 354, 402, 408, 453, 501, 507, 552, 600, 606, 609, 651, 705, 708, 750, 804, 807, 903, 906, 1032, 1065, 1122, 1155, 1212, 1245, 1290, 1302, 1335, 1380, 1425, 1470, 1515, 1560, 1605, 1650, 1740, 1830, 1896

Offset: 1

Klaus Brockhaus, May 07 2002

			The trajectory of 303 is part of the trajectory of 102; the trajectory of 750 joins the trajectory of 102 at 6666 after 3 steps.

Index entries for sequences related to Reverse and Add!

Cf. A070788 - A070794, A070796 - A070798, A063049.

limit = 10^3; x = NestList[ # + IntegerReverse[#] &, 102, limit];
Select[Range[1896],
 Intersection[NestList[ # + IntegerReverse[#] &, #, limit],
x] != {} &] (* Robert Price, Oct 20 2019 *)

cp's OEIS Frontend

A070793 Integers n such that the 'Reverse and Add!' trajectory of n joins the trajectory of 9.

Views

Author

Keywords

Examples

Links

Crossrefs

Programs

Mathematica