

A051039


4Stohr 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
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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*n59 for n>4. a(n) = 2*a(n1)a(n2) for n>6. G.f.: x*(7*x^5+4*x^4+2*x^3+x^2+1)/(x1)^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 * A325730 A325749 A056183
Adjacent sequences: A051036 A051037 A051038 * A051040 A051041 A051042


KEYWORD

nonn,easy


AUTHOR

Eric W. Weisstein


STATUS

approved



