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A037670
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Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,0.
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1
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3, 23, 161, 1130, 7912, 55384, 387691, 2713839, 18996873, 132978114, 930846800, 6515927600, 45611493203, 319280452423, 2234963166961, 15644742168730, 109513195181112, 766592366267784, 5366146563874491
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Harvey P. Dale, Table of n, a(n) for n = 1..1000
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FORMULA
| a(1)=3, a(2)=23, a(3)=161, a(4)=1130, a(n)=7*a(n-1)+a(n-3)-7*a(n-4) [From Harvey P. Dale, Oct 15 2011]
G.f.: (2*x+3)/(7*x^4-x^3-7*x+1) [From Harvey P. Dale, Oct 15 2011]
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MATHEMATICA
| With[{nn=10}, Table[FromDigits[Take[PadLeft[{}, 3nn, {3, 2, 0}], n], 7], {n, 3nn}]] (* or *) LinearRecurrence[{7, 0, 1, -7}, {3, 23, 161, 1130}, 30] (* From Harvey P. Dale, Oct 15 2011 *)
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CROSSREFS
| Sequence in context: A006184 A164536 A037789 * A037796 A027141 A002398
Adjacent sequences: A037667 A037668 A037669 * A037671 A037672 A037673
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KEYWORD
| nonn,base
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.edu)
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