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A014610 Tetranacci numbers arising in connection with current algebras sp(2)_n. 1
3, 5, 10, 19, 37, 71, 137, 264, 509, 981, 1891, 3645, 7026, 13543, 26105, 50319, 96993, 186960, 360377, 694649, 1338979, 2580965, 4974970, 9589563, 18484477, 35629975, 68678985, 132383000, 255176437, 491868397, 948106819, 1827534653, 3522686306, 6790196175 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..33.

Reference

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

FORMULA

G.f.: (3+2x+2x^2+x^3)/(1-x-x^2-x^3-x^4).

MATHEMATICA

LinearRecurrence[{1, 1, 1, 1}, {3, 5, 10, 19}, 29] (* Jean-Fran├žois Alcover, Feb 24 2019 *)

CROSSREFS

Sequence in context: A158943 A133999 A238431 * A117591 A003055 A317766

Adjacent sequences:  A014607 A014608 A014609 * A014611 A014612 A014613

KEYWORD

nonn

AUTHOR

Noureddine Chair

STATUS

approved

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Last modified November 17 05:27 EST 2019. Contains 329217 sequences. (Running on oeis4.)