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Search: id:A156833
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| 1, 2, 3, 6, 5, 16, 7, 24, 24, 38, 11, 103, 13, 68
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OFFSET
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1,2
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COMMENT
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Conjecture: for n>1, a(n) = n iff n is prime.
Companion to A156834: (1, 2, 3, 5, 5, 12, 7, 17, 19,...).
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FORMULA
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A054525 * A156348 * [1,2,3,...]
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EXAMPLE
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a(4) = 6 since first 4 terms of A156348 * [1, 2, 3, 4,...] = (1, 3, 4, 9);
Then (1, 3, 4, 9) dot (0, -1, 0, 1) = (0 - 3 + 0 + 9) = 6. Row 4 of A054525 = (0, -1, 0, 1).
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CROSSREFS
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Cf. A156348, A054525, A156834
Sequence in context: A066449 A098012 A066117 this_sequence A124655 A066838 A084678
Adjacent sequences: A156830 A156831 A156832 this_sequence A156834 A156835 A156836
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Feb 16 2009
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