A083830 Palindromes of the form 3n + 1 where n is also a palindrome: palindromes arising in A083829.

4, 7, 22, 232, 424, 454, 484, 727, 757, 787, 2332, 23332, 42124, 42424, 42724, 45154, 45454, 45754, 48184, 48484, 48784, 72127, 72427, 72727, 75157, 75457, 75757, 78187, 78487, 78787, 233332, 2333332, 4212124, 4215124, 4218124, 4242424

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Mathematica

Select[3#+1&/@Select[Range[15*10^5], PalindromeQ], PalindromeQ] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 20 2020 *)

Crossrefs

Cf. A083829.

Sequence in context: A162559 A126094 A073114 * A363650 A086968 A101824

Adjacent sequences: A083827 A083828 A083829 * A083831 A083832 A083833

Keyword

base,nonn

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 09 2003

Extensions

Corrected and extended by Ray Chandler, May 21 2003

Status

approved