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A000078 Tetranacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) +a(n-4).
(Formerly M1108 N0423)
+0
48
0, 0, 0, 1, 1, 2, 4, 8, 15, 29, 56, 108, 208, 401, 773, 1490, 2872, 5536, 10671, 20569, 39648, 76424, 147312, 283953, 547337, 1055026, 2033628, 3919944, 7555935, 14564533, 28074040, 54114452, 104308960, 201061985, 387559437, 747044834 (list; graph; listen)
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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.


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