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A059798 Primes p such that |p - q| is a square, where q is the reversal of p. 1
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; refs; listen; history; internal format)
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 * A173829 A110673 A134797

Adjacent sequences:  A059795 A059796 A059797 * A059799 A059800 A059801

KEYWORD

easy,nonn,base

AUTHOR

Enoch Haga (Enokh(AT)comcast.net), Feb 23 2001

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Last modified February 15 16:21 EST 2012. Contains 205823 sequences.