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Search: id:A143652
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| A143652 |
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(0, 1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3, 13,..) becomes (0^(1+2), 3^(2+2), 5^(2+3), 7^(2+3), 3^(2+2), 5^(11+2), 2^(3+13),..). |
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+0
2
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| 0, 81, 3125, 16807, 81, 1220703125, 65536, 1024, 15625, 1419857, 2097152, 256, 96889010407, 6436343, 2187, 65536, 81, 157775382034845806615042743, 150094635296999121, 256, 61159090448414546291, 1953125, 32
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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0^(1+2)=0^3=0=a(1).
3^(2+2)=3^4=81=a(2).
5^(2+3)=5^5=3125=a(3).
7^(2+3) =7^5=16807=a(4).
3^(2+2)=3^4=81=a(5).
5^(11+2)=5^13=1220703125=a(6).
2^(3+13) =2^16=65536=a(7).
2^(7+3)=2^10=1024=a(8), etc.
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MAPLE
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pflat2 := proc(nmax) local a, ifs, n, p, c ; a := [0, 1] ; for n from 2 to nmax do ifs := ifactors(n)[2] ; for p in ifs do a := [op(a), op(1, p)] ; if op(2, p) > 1 then a := [op(a), op(2, p)] ; fi; od: od: a ; end: pL := pflat2(120) : for n from 1 to nops(pL)-4 by 3 do printf("%d, ", op(n, pL)^(op(n+1, pL)+op(n+2, pL)) ) ; od: [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 06 2008]
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CROSSREFS
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Cf. A141269, A141270.
Sequence in context: A123219 A018223 A038398 this_sequence A017797 A017744 A053108
Adjacent sequences: A143649 A143650 A143651 this_sequence A143653 A143654 A143655
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KEYWORD
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nonn
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Nov 01 2008
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EXTENSIONS
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Extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 06 2008
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