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A320860
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Powers of 2 with initial digit 4.
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7
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4, 4096, 4194304, 4294967296, 4398046511104, 4503599627370496, 4611686018427387904, 4722366482869645213696, 4835703278458516698824704, 4951760157141521099596496896, 40564819207303340847894502572032, 41538374868278621028243970633760768
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OFFSET
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1,1
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COMMENTS
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Differs from A067482 first at n = 11.
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LINKS
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MAPLE
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select(x->"4"=""||x[1], [2^n$n=0..150])[];
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MATHEMATICA
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Select[2^Range[160], First[IntegerDigits[#]] == 4 &] (* G. C. Greubel, Oct 27 2018 *)
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PROG
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(GAP) Filtered(List([0..150], n->2^n), i->ListOfDigits(i)[1]=4);
(PARI) select(x->(digits(x)[1]==4), vector(200, n, 2^n)) \\ Michel Marcus, Oct 26 2018
(Magma) [2^n: n in [1..160] | Intseq(2^n)[#Intseq(2^n)] eq 4]; // G. C. Greubel, Oct 27 2018
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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