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Search: id:A114442
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| A114442 |
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Least prime whose absolute difference between its even decimal digits and its odd decimal digits is n. |
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+0
1
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| 211, 23, 2, 3, 13, 5, 127, 7, 17, 281, 19, 137, 277, 139, 59, 881, 79, 179, 11299, 199, 1559, 2797, 1399, 599, 12799, 997, 1979, 86861, 1999, 13799, 25999, 13999, 49999, 172999, 70999, 19979, 1199929, 39799, 137999, 277999, 139999, 59999, 1299979
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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When a(n) is not A067180(n) and n!=0 (mod 3): 1, 11, 13, 17, 20, 22, 26, 29, 31, 32, 34, 35, 37, 38, 40, 44, 47, 49, 53, 55, 56, 58, 59, 61, 62, 65, 67, 70, 71, 73, 74, 76, 77, 80, 82, 83, ....
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EXAMPLE
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a(0)=211 since 211 is the least prime which meets the criteria, i.e.; |2-(1+1)|=0.
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MATHEMATICA
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f[n_] := Block[{id = IntegerDigits@Prime@n}, Abs[(Plus @@ id) - 2Plus @@ Select[id, OddQ]]]; t = Table[0, {50}]; Do[ a = f[n]; If[ t[[a + 1]] == 0, t[[a + 1]] = n], {n, 100020}]; t
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CROSSREFS
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Cf. A111309, A067180.
Sequence in context: A136350 A068297 A028677 this_sequence A037272 A020365 A031780
Adjacent sequences: A114439 A114440 A114441 this_sequence A114443 A114444 A114445
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com) and Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 04 2006
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