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A082216
Smallest palindrome beginning with n.
9
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
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
Sequence in context: A122625 A347400 A056544 * A052426 A240237 A056142
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