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 A136022 First differences of A136021. 1
 19, 1028, 63326, 4417267, 336418691, 27095099730, 2264740360646, 194526458511192, 17050085068702458, 1517704371492095702, 136758640772944755122, 12445444666179480674989, 1141852084948606732236114, 105483948921834512942168239 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA a(n) = A136021(n)-A136021(n-1). EXAMPLE a(1)=19 because at 10^0 the prime divisor sum in A136021 is zero, so 19-0=19. From the second sum in A136021, 1047, subtract 19, so that a(2) = 1028. CROSSREFS Cf. A136021. Sequence in context: A192569 A238740 A285862 * A203582 A136021 A195214 Adjacent sequences:  A136019 A136020 A136021 * A136023 A136024 A136025 KEYWORD more,nonn AUTHOR Enoch Haga, Dec 10 2007, Dec 12 2007 EXTENSIONS a(6) from R. J. Mathar, Dec 12 2007 Edited by R. J. Mathar, Apr 17 2009 a(7)-a(11) from Max Alekseyev, Jan 30 2012 a(12)-a(14) from Hiroaki Yamanouchi, Jun 29 2014 STATUS approved

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Last modified January 25 23:56 EST 2022. Contains 350572 sequences. (Running on oeis4.)