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 A014935 a(1)=1, a(n) = n*18^(n-1) + a(n-1). 1
 1, 37, 1009, 24337, 549217, 11886625, 249972193, 5147732449, 104327377633, 2087920281313, 41363059774177, 812583980724961, 15851391939265249, 307372900058661601, 5929573413789876961, 113875823277429211873 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Index entries for linear recurrences with constant coefficients, signature (37,-360,324). FORMULA a(n) = (1/289)*(1+18^n*(17*n-1)), with n >= 1. - Paolo P. Lava, Jan 13 2009 G.f.: x/((1 - x)*(1 - 18*x)^2). - Stefano Spezia, Mar 11 2020 PROG (PARI) a(n) = (1+18^n*(17*n-1))/289; \\ Jinyuan Wang, Mar 11 2020 CROSSREFS Sequence in context: A332857 A237857 A306472 * A124155 A218764 A217454 Adjacent sequences: A014932 A014933 A014934 * A014936 A014937 A014938 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified February 4 19:02 EST 2023. Contains 360059 sequences. (Running on oeis4.)