A020723 - OEIS

A020723

n+9.

9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81

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OFFSET

0,1

COMMENTS

Pisot sequences E(9,10), P(9,10), T(9,10).

REFERENCES

Shalosh B. Ekhad, N. J. A. Sloane and Doron Zeilberger, Automated Proof (or Disproof) of Linear Recurrences Satisfied by Pisot Sequences, Preprint, 2016.

LINKS

Table of n, a(n) for n=0..72.

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (2,-1).

FORMULA

a(n) = n+9. a(n) = 2a(n-1) - a(n-2).

PROG

(PARI) a(n)=n+9

CROSSREFS

See A008776 for definitions of Pisot sequences.

Sequence in context: A168099 A004498 A171892 * A317591 A107043 A182362

Adjacent sequences: A020720 A020721 A020722 * A020724 A020725 A020726

KEYWORD

nonn,easy

AUTHOR

David W. Wilson

STATUS

approved