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A099203
Integers divisible by 7 which are sequentially obtained from the decimal expansion of sqrt(2) = 1.4142135...
1
14, 14, 21, 35, 623, 7, 30950488016, 88724209, 6980785, 69671, 875, 37694807317667973799073247846210703885038753432, 7, 641572735013, 84, 623, 0, 91, 229702492483605585073, 7, 21, 264412149709993583141322266592, 7, 50559275579995, 0, 50115278206, 0, 571470109
OFFSET
1,1
EXAMPLE
a(3)=21 because it is the first integer divisible by 7 which is obtained from the beginning of the unused part of the decimal expansion of square root 2.
PROG
(PARI)
SeqDigits(v, pred)={my(L=List(), k=1); for(i=1, #v, my(t=fromdigits(v[k..i])); if(pred(t), listput(L, t); k=i+1)); Vec(L)}
{ localprec(400); SeqDigits(digits(floor(sqrt(2)*10^250)), t->t%7==0) } \\ Andrew Howroyd, Nov 06 2019
CROSSREFS
Sequence in context: A157427 A003905 A205702 * A040183 A022348 A214463
KEYWORD
nonn,base,less
AUTHOR
Serhat Sevki Dincer (mesti_mudam(AT)yahoo.com), Oct 04 2004
EXTENSIONS
Terms a(9) and beyond from Andrew Howroyd, Nov 06 2019
STATUS
approved