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A195943
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Zeroless prime powers: Intersection of A000961 and A052382.
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23
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1, 2, 3, 4, 5, 7, 8, 9, 11, 13, 16, 17, 19, 23, 25, 27, 29, 31, 32, 37, 41, 43, 47, 49, 53, 59, 61, 64, 67, 71, 73, 79, 81, 83, 89, 97, 113, 121, 125, 127, 128, 131, 137, 139, 149, 151, 157, 163, 167, 169, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 243, 251, 256, 257, 263, 269, 271, 277, 281, 283, 289, 293, 311
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OFFSET
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1,2
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COMMENTS
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In contrast to A195942, we also allow for primes (p^n with n=1) in this sequence.
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LINKS
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Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
C. Rivera, Puzzle 607. A zeroless Prime power, on primepuzzles.net, Sept. 24, 2011.
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FORMULA
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A195943 = A000961 intersect A052382 = A000961 \ A011540.
A010055(a(n)) * A168046(a(n)) = 1. - Reinhard Zumkeller, Sep 27 2011
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PROG
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(PARI) for( n=1, 9999, is_A000961(n) && is_A052382(n) && print1(n", "))
(Haskell)
a195943 n = a195943_list !! (n-1)
a195943_list = filter ((== 1) . a010055) a052382_list
-- Reinhard Zumkeller, Sep 27 2011
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CROSSREFS
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Cf. A195942, A195944, A195945, A195946, A195908, A195948, A007377, A008839, A030700, A030701, A030702, A030703, A030704, A030705, A030706.
Cf. A038618 (subsequence).
Sequence in context: A246655 A000961 A128603 * A096165 A164336 A115919
Adjacent sequences: A195940 A195941 A195942 * A195944 A195945 A195946
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KEYWORD
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nonn,base
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AUTHOR
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M. F. Hasler, Sep 25 2011
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STATUS
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approved
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