| 1, 4, 11, 16, 15, 12, 23, 44, 45, 40, 41, 72, 93, 98, 99, 48, 133, 108, 109, 160, 117, 172, 81, 120, 217, 176, 159, 102, 221, 144, 187, 262, 169, 304, 375, 276, 241, 158, 211, 316, 273, 72, 313, 320, 397, 406, 227, 582, 335, 236, 187, 460, 293, 274, 663, 178, 433, 538
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(n)=ds_prime(n)(n^5), where ds_prime(n)=digital sum base the n-th prime.
a(n)=n^5-(prime(n)-1)*sum{k>0, floor(n^5/prime(n)^k)}.
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EXAMPLE
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a(2)=ds_prime(2)(2^5)=ds_3(32)=1+0+1+2=4; a(6)=ds_prime(5)(5^5)=ds_11(3125)=2+9+3+1=15.
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CROSSREFS
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Cf. A000040, A007953, A054899, A075771, A131451, A133620, A133900, A134599.
Adjacent sequences: A135102 A135103 A135104 this_sequence A135106 A135107 A135108
Sequence in context: A003250 A022131 A091391 this_sequence A072423 A020961 A005224
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KEYWORD
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nonn
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AUTHOR
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Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Dec 24 2007
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