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 A138794 a(n) = A138793(n+1)-A138793(n). 1
 20, 300, 4000, 50000, 600000, 7000000, 80000000, 900000000, 1000000000, 1100000000000, 210000000000000, 31000000000000000, 4100000000000000000, 510000000000000000000, 61000000000000000000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS First differences of A138793 LINKS FORMULA a(n) = A138793(n+1)-A138793(n) MATHEMATICA b = {}; a = {}; Do[w = RealDigits[n]; w = First[w]; Do[AppendTo[a, w[[k]]], {k, 1, Length[w]}]; p = FromDigits[Reverse[a]]; AppendTo[b, p], {n, 1, 31}]; c = {}; Do[AppendTo[c, b[[n + 1]] - b[[n]]], {n, 1, Length[b] - 1}]; c (*Artur Jasinski*) CROSSREFS Cf. A000422, A116504, A007908, A116505, A104759, A138789, A138790, A138793, A075019, A075020, A075021, A075022. Sequence in context: A250014 A291256 A250015 * A077758 A202270 A053541 Adjacent sequences:  A138791 A138792 A138793 * A138795 A138796 A138797 KEYWORD nonn,base AUTHOR Artur Jasinski, Mar 30 2008 STATUS approved

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