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 A051202 Numbers n such that A005210(n) = 0. 1
 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)
 OFFSET 1,1 REFERENCES Popular Computing (Calabasas, CA), Z-Sequences, Vol. 4 (No. 42, Sep 1976), pp. 12-16. LINKS Popular Computing (Calabasas, CA), Z-Sequences, continued. Annotated and scanned copy of pages 14, 15, 16, 18 of Vol. 5 (No. 56, Nov 1977). MAPLE 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: [seq(t1[n], n=1..nops(t1))]; # N. J. A. Sloane, Apr 16 2015 PROG (Python) A051202_list, a2, a1 = [], 1, 1 for n in range(3, 10**13): ....a = abs(a1+2*a2-n) ....if a == 0: ........A051202_list.append(n) ....a1, a2 = a, a1 # Chai Wah Wu, Apr 19 2015 CROSSREFS Cf. A005210. Sequence in context: A103798 A093361 A227364 * A211674 A035095 A066674 Adjacent sequences:  A051199 A051200 A051201 * A051203 A051204 A051205 KEYWORD nonn AUTHOR EXTENSIONS a(31)-a(34) from Chai Wah Wu, Apr 19 2015 a(35)-a(36) from Chai Wah Wu, May 07 2015 STATUS approved

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Last modified April 15 07:59 EDT 2021. Contains 342975 sequences. (Running on oeis4.)