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A051039 4-Stohr sequence. 9
1, 2, 4, 8, 16, 31, 46, 61, 76, 91, 106, 121, 136, 151, 166, 181, 196, 211, 226, 241, 256, 271, 286, 301, 316, 331, 346, 361, 376, 391, 406, 421, 436, 451, 466, 481, 496, 511, 526, 541, 556, 571, 586, 601, 616, 631, 646, 661, 676, 691, 706, 721, 736, 751 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Eric Weisstein's World of Mathematics, Stoehr Sequence.

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

FORMULA

a(n) = 15*n-59 for n>4. a(n) = 2*a(n-1)-a(n-2) for n>6. G.f.: x*(7*x^5+4*x^4+2*x^3+x^2+1)/(x-1)^2. [Colin Barker, Sep 19 2012]

MATHEMATICA

Join[{1, 2, 4, 8}, Range[16, 3001, 15]] (* Vladimir Joseph Stephan Orlovsky, Jan 27 2012 *)

LinearRecurrence[{2, -1}, {1, 2, 4, 8, 16, 31}, 60] (* Harvey P. Dale, Dec 25 2016 *)

CROSSREFS

Cf. A033627, A026474, A051040.

Sequence in context: A018763 A054517 A054016 * A056183 A000127 A133552

Adjacent sequences:  A051036 A051037 A051038 * A051040 A051041 A051042

KEYWORD

nonn,easy

AUTHOR

Eric W. Weisstein

STATUS

approved

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Last modified December 14 00:21 EST 2017. Contains 295976 sequences.