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 A281225 The decimal representation of the Elias delta code for n (A281150(n)). 2
 1, 8, 9, 20, 21, 22, 23, 192, 193, 194, 195, 196, 197, 198, 199, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 832, 833, 834, 835, 836, 837, 838, 839, 840, 841, 842, 843, 844, 845, 846, 847, 848, 849, 850, 851, 852, 853, 854, 855, 856, 857 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Indranil Ghosh, Table of n, a(n) for n = 1..10000 J. Nelson Raja, P. Jaganathan and S. Domnic, A New Variable-Length Integer Code for Integer Representation and Its Application to Text Compression, Indian Journal of Science and Technology, Vol 8(24), September 2015. EXAMPLE For n = 6, The Elias delta code for 6 is "10110" which is 22 in decimal. So, a(6) = 22. PROG (Python) def unary(n): ....return "1"*(n-1)+"0" def elias_gamma(n): ....if n==1: ........return "1" ....k=int(math.log(n, 2)) ....fp=unary(1+k)    #fp is the first part ....sp=n-2**(k)      #sp is the second part ....nb=k             #nb is the number of bits used to store sp in binary ....sp=bin(sp)[2:] ....if len(sp)

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Last modified September 17 16:57 EDT 2019. Contains 327136 sequences. (Running on oeis4.)