A082216 Smallest palindrome beginning with n.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 101, 11, 121, 131, 141, 151, 161, 171, 181, 191, 202, 212, 22, 232, 242, 252, 262, 272, 282, 292, 303, 313, 323, 33, 343, 353, 363, 373, 383, 393, 404, 414, 424, 434, 44, 454, 464, 474, 484, 494, 505

Offset

0,3

Links

T. D. Noe, Table of n, a(n) for n = 0..10000

Formula

a(A002113(n)) = A002113(n). - Chai Wah Wu, Apr 13 2021

Prog

(Python)
def A082216(n):
    s = str(n)
    t = s[::-1]
    if s == t:
        return n
    for i in range(1, len(s)):
        if s[i:] == t[:-i]:
            return int(s+t[-i:]) # Chai Wah Wu, Apr 13 2021

Crossrefs

Cf. A002113, A056544.

Sequence in context: A122625 A347400 A056544 * A052426 A240237 A056142

Adjacent sequences: A082213 A082214 A082215 * A082217 A082218 A082219

Keyword

base,easy,nonn

Author

Amarnath Murthy, Apr 08 2003

Extensions

Corrected by T. D. Noe, Mar 10 2011

a(0) added by Chai Wah Wu, Apr 14 2021

Status

approved