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 A250073 Powers of 2 written in base 60, concatenating the decimal values of the sexagesimal digits. 6
 1, 2, 4, 8, 16, 32, 104, 208, 416, 832, 1704, 3408, 10816, 21632, 43304, 90608, 181216, 362432, 1124904, 2253808, 4511616, 9423232, 19250504, 38501008, 117402016, 235204032, 510412104, 1021224208, 2042452416, 4125304832, 12251013704, 24542031408, 53124062816 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Each sexagesimal digit appears as a pair of decimal digits as on a digital clock. Any leading zeros are truncated. Thus decimal 64 appears as "104" and not "0104". LINKS EXAMPLE a(7) = 208, since 2^7 = 128 = 2 sixties plus 8, thus 2:08 in clock-like notation, which becomes 208 when restricted to the numeric characters. MATHEMATICA a250073[n_Integer] := FromDigits@   StringJoin[    If[# < 10, StringJoin["0", ToString[#]], ToString[#]] & /@ IntegerDigits[2^n, 60]]; a250073 /@ Range[60] (* Michael De Vlieger, Nov 11 2014 *) PROG (PARI) a(n) = {d = digits(2^n, 60); s = ""; for (i=1, #d, if (d[i] < 10, s = concat(s, "0")); s = concat(s, Str(d[i]))); eval(s); } \\ Michel Marcus, Nov 12 2014 CROSSREFS Cf. A000079. Sequence in context: A195458 A264656 A078227 * A260873 A138814 A233424 Adjacent sequences:  A250070 A250071 A250072 * A250074 A250075 A250076 KEYWORD nonn,base AUTHOR Michael De Vlieger, Nov 11 2014 STATUS approved

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Last modified June 16 06:46 EDT 2019. Contains 324145 sequences. (Running on oeis4.)