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 A266242 Numbers n such that the initial digit of the fractional part of n*Pi is 0. 1
 0, 36, 43, 50, 57, 64, 71, 78, 85, 92, 99, 106, 149, 156, 163, 170, 177, 184, 191, 198, 205, 212, 219, 262, 269, 276, 283, 290, 297, 304, 311, 318, 325, 332, 375, 382, 389, 396, 403, 410, 417, 424, 431, 438, 445, 488, 495, 502, 509, 516, 523, 530, 537 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Because 22/7 is so close to Pi, a(n+1) - a(n) is very often 7. n for which A145951(n) = 0. LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE 36*Pi = 113.09... so 36 is in the sequence. MAPLE select(t -> floor(10*t*Pi) mod 10 = 0, [\$0..1000]); PROG (PARI) for(n=0, 1e3, if(floor(10*n*Pi) % 10 == 0, print1(n", "))); \\ Altug Alkan, Dec 25 2015 CROSSREFS Cf. A145951. Sequence in context: A078299 A225028 A239802 * A274241 A062519 A138566 Adjacent sequences:  A266239 A266240 A266241 * A266243 A266244 A266245 KEYWORD nonn,base AUTHOR Robert Israel, Dec 25 2015 STATUS approved

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Last modified July 16 04:26 EDT 2019. Contains 325064 sequences. (Running on oeis4.)