A033175 -id:A033175 - cp's OEIS frontend

A177080 a(n) = 5*(10^n-7).

15, 465, 4965, 49965, 499965, 4999965, 49999965, 499999965, 4999999965, 49999999965, 499999999965, 4999999999965, 49999999999965, 499999999999965, 4999999999999965, 49999999999999965, 499999999999999965

Offset: 1

Vincenzo Librandi

Index entries for linear recurrences with constant coefficients, signature (11,-10).

G.f.: 15*x*(1+20*x) / ( (10*x-1)*(x-1) ). a(n) = 15*A033175(n-1). - R. J. Mathar, Jan 05 2011

A177098 6*(10^n-7).

Original entry on oeis.org

18, 558, 5958, 59958, 599958, 5999958, 59999958, 599999958, 5999999958, 59999999958, 599999999958, 5999999999958, 59999999999958, 599999999999958, 5999999999999958, 59999999999999958, 599999999999999958

Offset: 1

Vincenzo Librandi

Index entries for linear recurrences with constant coefficients, signature (11,-10).

6(10^Range[20]-7)  (* Harvey P. Dale, Mar 22 2011 *)

G.f. 18*x*(1+20*x) / ( (10*x-1)*(x-1) ). - R. J. Mathar, Aug 24 2011

a(n) = 18*A033175(n-1). - R. J. Mathar, Aug 24 2011

A177107 3*(10^n-7).

Original entry on oeis.org

9, 279, 2979, 29979, 299979, 2999979, 29999979, 299999979, 2999999979, 29999999979, 299999999979, 2999999999979, 29999999999979, 299999999999979, 2999999999999979, 29999999999999979, 299999999999999979

Offset: 1

Vincenzo Librandi, Nov 15 2010

Index entries for linear recurrences with constant coefficients, signature (11,-10).

3(10^Range[20]-7) (* or *) LinearRecurrence[{11,-10},{9,279},20] (* Harvey P. Dale, Mar 20 2020 *)

G.f 9*x*(1+20*x) / ( (10*x-1)*(x-1) ). a(n) = 9*A033175(n-1). - R. J. Mathar, Jan 06 2011

A177112 4*(10^n-7).

Original entry on oeis.org

12, 372, 3972, 39972, 399972, 3999972, 39999972, 399999972, 3999999972, 39999999972, 399999999972, 3999999999972, 39999999999972, 399999999999972, 3999999999999972, 39999999999999972, 399999999999999972

Offset: 1

Vincenzo Librandi

Index entries for linear recurrences with constant coefficients, signature (11,-10).

4(10^Range[20]-7) (* or *) LinearRecurrence[{11,-10},{12,372},20] (* Harvey P. Dale, Nov 22 2019 *)

G.f. 12*x*(1+20*x) / ( (10*x-1)*(x-1) ). - R. J. Mathar, Aug 24 2011

a(n) = 12 *A033175(n-1). - R. J. Mathar, Aug 24 2011

cp's OEIS Frontend

A177080 a(n) = 5*(10^n-7).

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A177098 6*(10^n-7).

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A177107 3*(10^n-7).

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A177112 4*(10^n-7).

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