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 A014943 a(1)=1, a(n)=n*25^(n-1)+a(n-1). 1
 1, 51, 1926, 64426, 2017551, 60611301, 1769595676, 50597720676, 1423888736301, 39570861392551, 1088612609439426, 29698842101626926, 804559224181705051, 21666184895568423801, 580459729664855533176 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Index entries for linear recurrences with constant coefficients, signature (51, -675, 625). FORMULA a(n)=(1/576)*[1+25^n*(24*n-1)], with n>=1 [From Paolo P. Lava, Jan 13 2009] a(1)=1, a(2)=51, a(3)=1926, a(n)=51*a(n-1)-675*a(n-2)+625*a(n-3). - Harvey P. Dale, Dec 16 2012 MATHEMATICA RecurrenceTable[{a[1]==1, a[n]==n*25^(n-1)+a[n-1]}, a, {n, 20}] (* or *) LinearRecurrence[{51, -675, 625}, {1, 51, 1926}, 20] (* Harvey P. Dale, Dec 16 2012 *) CROSSREFS Sequence in context: A017714 A202044 A238319 * A278623 A288604 A278305 Adjacent sequences:  A014940 A014941 A014942 * A014944 A014945 A014946 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified November 15 04:00 EST 2018. Contains 317225 sequences. (Running on oeis4.)