id:A059798 - OEIS Search Results

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Primes p such that |p - q| is a square, where q is the reversal of p.

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23, 37, 43, 59, 67, 73, 89, 1237, 1567, 1787, 1907, 2141, 2251, 2297, 2633, 2963, 3019, 4079, 4253, 4363, 4583, 6637, 6701, 6857, 6967, 7211, 7321, 7541, 8147, 8419, 8923, 8969, 9103, 9323, 9433, 29303, 29803, 40093, 40193, 40493, 40693, 40993 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`Subtract reversal of prime from prime. Take absolute value. If a square, add to sequence.`
	EXAMPLE	`a(7)=1237. Reverse is 7321 so 7321-1237=6084 and 6084 is a square whose root is 78.`
	CROSSREFS	`Cf. A059799.` `Sequence in context: A045533 A154114 A163384 this_sequence A110673 A134797 A153740` `Adjacent sequences: A059795 A059796 A059797 this_sequence A059799 A059800 A059801`
	KEYWORD	`easy,nonn,base`
	AUTHOR	`Enoch Haga (Enokh(AT)comcast.net), Feb 23 2001`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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