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Search: id:A074858
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| A074858 |
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a(n)=a(n-1)+a(n-2)+R[a(n-3)] where a(0)=a(1)=a(2)=1 and R(n) (A004086) means the reverse of n. |
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1
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| 1, 1, 1, 3, 5, 9, 17, 31, 57, 159, 229, 463, 1643, 3028, 5035, 11524, 24762, 41591, 108864, 177197, 305575, 951573, 2048919, 3575995, 6000073, 18774470, 30770296, 53244772, 91462849, 213915324, 333122408, 641864151, 1398505871, 2844591355
(list; graph; listen)
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OFFSET
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0,4
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EXAMPLE
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a(9)=57+31+R(17)=57+31+71=159
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MAPLE
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R:=proc(n) local nn, nnn: nn:=convert(n, base, 10): add(nn[nops(nn)+1-j]*10^(j-1), j=1..nops(nn)) end: a[0]:=1: a[1]:=1: a[2]:=1: for n from 3 to 34 do a[n]:=a[n-1]+a[n-2]+R(a[n-3]) od: seq(a[n], n=0..34); (Deutsch)
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CROSSREFS
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Cf. A000213.
Adjacent sequences: A074855 A074856 A074857 this_sequence A074859 A074860 A074861
Sequence in context: A066173 A114322 A000213 this_sequence A074860 A135728 A083318
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KEYWORD
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easy,nonn
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AUTHOR
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Felice Russo (felice.russo(AT)katamail.com), Sep 11 2002
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jul 25 2005
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