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A051202
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Numbers n such that A005210(n) = 0.
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1
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3, 7, 11, 28, 31, 140, 239, 600, 6476, 33172, 64375, 65287, 79051, 97864, 105099, 421335, 710147, 1464192, 3946972, 5423007, 5822348, 6150008, 6297183, 20801744, 22375360, 79009771, 197449588, 266929040, 537524972, 5929856931, 6365146483, 7274986071, 7983314176, 19034311884, 198776542655, 1773302419915
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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REFERENCES
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Popular Computing (Calabasas, CA), Z-Sequences, Vol. 4 (No. 42, Sep 1976), pp. 12-16.
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LINKS
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Popular Computing (Calabasas, CA), Z-Sequences, continued. Annotated and scanned copy of pages 14, 15, 16, 18 of Vol. 5 (No. 56, Nov 1977).
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MAPLE
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t1:=[];
M:=200000:
a:=1: b:=1:
for n from 3 to M do c:=abs(2*a+b-n);
if c=0 then t1:=[op(t1), n]; fi;
a:=b; b:=c; od:
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PROG
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(Python)
for n in range(3, 10**13):
....a = abs(a1+2*a2-n)
....if a == 0:
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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