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 A055643 Babylonian numbers: integers in base 60 with each sexagesimal digit represented by 2 decimal digits, leading zeros omitted. 13
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS From  Wolfdieter Lang, Jan 16 2018: (Start) The symbols used for 0..9 in this base 60 notation are 00, 01, ..., 09, but leading zeros are omitted. For the Sumerian-Babylonian sexagesimal-decimal number system which uses two positions for each base-60 position filled with only one-digit numbers alternating between ranges of 0 to 9 and 0 to 5 see the link below. (End) REFERENCES Mohammad K. Azarian, Meftah al-hesab: A Summary, MJMS, Vol. 12, No. 2, Spring 2000, pp. 75-95. Mathematical Reviews, MR 1 764 526. Zentralblatt MATH, Zbl 1036.01002. Mohammad K. Azarian, A Summary of Mathematical Works of Ghiyath ud-din Jamshid Kashani, Journal of Recreational Mathematics, Vol. 29(1), pp. 32-42, 1998. Georges Ifrah, Histoire Universelle des Chiffres, Paris, 1981. Georges Ifrah, From one to zero, A universal history of numbers, Viking Penguin Inc., 1985. Georges Ifrah, Universalgeschichte der Zahlen, Campus  Verlag, Frankfurt, New York, 2. Auflage, 1987, pp. 210-221. LINKS Michael De Vlieger, Table of n, a(n) for n = 0..10000 Wolfdieter Lang, Sumerian-Babylonian sexagesimal-decimal number system. MATHEMATICA Array[FromDigits@ Apply[Join, PadLeft[#, 2] & /@ IntegerDigits@ IntegerDigits[#, 60]] &, 71, 0] (* Michael De Vlieger, Jan 11 2018 *) PROG (PARI) A055643(n)=fromdigits(digits(n, 60), 100) \\ M. F. Hasler, Jan 09 2018 CROSSREFS Cf. A049872, A131650, Note also that A250073 = a(A000079(n)), A250089 = a(A051037(n)), A254334 = a(A000244(n)), A254335 = a(A000351(n)), A254336 = a(A011557(n)). See also A281863 (value of the 0,1,2,...n-th digit of a(n), counted from the right), A282622 (length of a(n), #digits, for n >= 1). Sequence in context: A265711 A262065 A296765 * A122079 A272118 A247163 Adjacent sequences:  A055640 A055641 A055642 * A055644 A055645 A055646 KEYWORD base,easy,nonn AUTHOR Henry Bottomley, Jun 06 2000 EXTENSIONS a(69) and a(70) from WG Zeist, Sep 08 2012 STATUS approved

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Last modified December 15 04:23 EST 2019. Contains 329991 sequences. (Running on oeis4.)