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A112719
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Numbers n such that pi(n)=d_1^1+d_2^2+...+d_k^k where d_1 d_2 ... d_k is the decimal expansion of n.
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3
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0, 12, 160, 253, 382, 3664, 4683, 9285, 66290, 207735, 390481, 3748380, 7884391, 9136095, 11187665, 12690170, 15008945, 32067066, 34152082, 43470982, 311506482, 315458182, 317195680, 317583584, 789530607, 803190747, 818360167
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OFFSET
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1,2
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COMMENTS
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This sequence is finite and the largest term is less than 10^73.
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LINKS
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EXAMPLE
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43470982 is in the sequence because pi(43470982)=4^1+3^2+4^3
+7^4+0^5+9^6+8^7+2^8.
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MATHEMATICA
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Do[d=IntegerDigits[n]; k=Length[d]; If[PrimePi[n]==Sum[d[[j]]^j, {j, k}], Print[n]], {n, 0, 170000000}]
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CROSSREFS
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KEYWORD
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base,fini,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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