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A095982
a(n) = a(n-1) + a(n-2) + a(n-4) with a(0) = 2, a(1) = 3, a(2) = 6, a(3) = 9.
1
2, 3, 6, 9, 17, 29, 52, 90, 159, 278, 489, 857, 1505, 2640, 4634, 8131, 14270, 25041, 43945, 77117, 135332, 237490, 416767, 731374, 1283473, 2252337, 3952577, 6936288, 12172338, 21360963, 37485878, 65783129, 115441345, 202585437
OFFSET
0,1
MATHEMATICA
LinearRecurrence[{1, 1, 0, 1}, {2, 3, 6, 9}, 40] (* Harvey P. Dale, Jul 14 2018 *)
CROSSREFS
Sequence in context: A073776 A129853 A374686 * A095090 A061947 A018251
KEYWORD
easy,nonn
AUTHOR
P. Barkin (prb614(AT)comcast.net), Jul 16 2004
EXTENSIONS
Corrected and extended by Ray G. Opao, Aug 09 2004
STATUS
approved