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A062935 Palindromes of the form n! + 1. 1

%I #12 Apr 17 2022 11:06:27

%S 2,3,7,121

%N Palindromes of the form n! + 1.

%e 121 = 5! + 1.

%t Select[Range[10]!+1,PalindromeQ] (* _Harvey P. Dale_, Apr 17 2022 *)

%o (Python)

%o A062935_list, n = [], 1

%o for i in range(1,10**3):

%o ....n *= i

%o ....s = str(n+1)

%o ....if s == s[::-1]:

%o ........A062935_list.append(n+1) # _Chai Wah Wu_, Dec 03 2014

%K nonn,base

%O 1,1

%A _Amarnath Murthy_, Jul 05 2001

%E Comment from _Dean Hickerson_, Jul 06 2001: I doubt that there are any more terms, but I see no hope of proving that. If there are any more terms, they're too large to fit.

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Last modified May 8 06:53 EDT 2024. Contains 372319 sequences. (Running on oeis4.)