Search: a278699 -id:a278699
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A279956
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Primes p such that every suffix of the base-4 representation of p is either a prime or 1.
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+10
1
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2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 37, 43, 53, 59, 61, 67, 71, 83, 101, 107, 131, 139, 151, 157, 181, 193, 197, 199, 211, 229, 251, 257, 263, 269, 293, 317, 449, 467, 523, 541, 571, 613, 619, 643, 709, 769, 773, 787, 797, 811, 821, 827, 829, 839, 907, 919, 967, 997, 1019, 1031, 1061
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OFFSET
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1,1
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LINKS
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EXAMPLE
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107 is a term in the sequence, since 107_10=1223_4, and 223_4, 23_4 and 3_4 (43_10, 11_10, and 3_10) are all prime.
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CROSSREFS
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Also, cf. A278699 for base 4, where the final suffix cannot be 1 (it must be a prime, i.e., 2 or 3).
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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