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Search: id:A061509
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| A061509 |
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Write n in decimal, omit 0's, replace each digit k by k-th prime, raise to k-th power and multiply. |
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+0
5
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| 2, 4, 8, 16, 32, 64, 128, 256, 512, 2, 6, 18, 54, 162, 486, 1458, 4374, 13122, 39366, 4, 12, 36, 108, 324, 972, 2916, 8748, 26244, 78732, 8, 24, 72, 216, 648, 1944, 5832, 17496, 52488, 157464, 16, 48, 144, 432, 1296, 3888, 11664, 34992, 104976, 314928
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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a(n) = a(n*10^k). a((10^k-1)/9) = Primorial (k).
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LINKS
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Matthew M. Conroy, Home page (listed instead of email address)
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EXAMPLE
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a(4) = 2^4 = 16, a(123) = (2^1)*(3^2)*(5^3) = 2250.
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CROSSREFS
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Cf. A061510.
Sequence in context: A113019 A069877 A085940 this_sequence A086066 A085941 A054842
Adjacent sequences: A061506 A061507 A061508 this_sequence A061510 A061511 A061512
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 06 2001
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EXTENSIONS
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Corrected and extended by Matthew M. Conroy, May 13 2001
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