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 A248863 Table of bit patterns: The bits of A011545(n) -- approximations to Pi -- placed into row n in the order MSB to LSB. 0
 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1 COMMENTS The binary representations of A011545 are 3 = 11_2, 31 = 11111_2, 314 = 100111010_2, 3141 = 110001000101_2, ..., and these binary digits are read left to right and added to the table. LINKS EXAMPLE 3 is 2 + 1 = 2^0 + 2^1, the first 2 bits, so the sequence starts 1,1. 31 is 16 + 8 + 4 + 2 + 1 = 2^0 + 2^1 + 2^2 + 2^3 + 2^4, the first 5 bits, adding 1,1,1,1,1. 314 is 256 + 32 + 16 + 8 + 2 = 2^8 + 2^5 + 2^4 + 2^3 + 2^1 adding 1,0,0,1,1,1,0,1,0. 1,1; 1,1,1,1,1; 1,0,0,1,1,1,0,1,0; 1,1,0,0,0,1,0,0,0,1,0,1; 1,1,1,1,0,1,0,1,0,1,1,0,1,1,1; 1,0,0,1,1,0,0,1,0,1,1,0,0,1,0,1,1,1,1; 1,0,1,1,1,1,1,1,1,0,1,1,1,1,1,1,0,1,1,0,0,0; 1,1,1,0,1,1,1,1,1,0,1,0,1,1,1,1,0,0,1,1,1,0,1,1,0; PROG (Python) mystr='' with open('c:\\bA011545.txt') as myfile: ...mess = [line.rstrip('\n') for line in myfile] for i5 in range(len(mess)): ...tp=mess[i5].split(' ') ...mystr=mystr+bin(int(tp[1])) pre1=mystr.replace('0b', '') pre2=pre1.replace('1', '1, ') final=pre2.replace('0', '0, ') print (final) CROSSREFS Cf. A011545 (Decimal expansion of Pi truncated to n places). Cf. A004601 (Binary expansion of Pi). Sequence in context: A330548 A225817 A332732 * A328306 A267256 A334460 Adjacent sequences:  A248860 A248861 A248862 * A248864 A248865 A248866 KEYWORD easy,nonn,tabf,less AUTHOR Bill McEachen, Mar 03 2015 STATUS approved

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Last modified August 15 13:11 EDT 2020. Contains 336504 sequences. (Running on oeis4.)