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A260004
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Values of f(2,x,y) in increasing order, for x>=0, y>0 where f is the Sudan function defined in A260002.
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4
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1, 8, 19, 27, 74, 185, 440, 1015, 2294, 5109, 10228, 11252, 24563, 53234, 114673, 245744, 524271, 1114094, 2359277, 4980716, 10485739, 22020074, 46137321, 88080360, 96468968, 201326567, 419430374, 872415205, 1811939300, 15569256417
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OFFSET
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1,2
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COMMENTS
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This is a subsequence of A260003 since f(2,x,y)= f(1, f(2,x,y-1), f(2,x,y-1)+y).
In this list we suppose that y>0. If we take y=0, all the natural numbers would be in the sequence.
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LINKS
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EXAMPLE
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f(2,0,1) = f(1, f(2,0,0), f(2,0,0)+1) = f(1,0,1) = 2^1(0+2)-1-2 = 1;
f(2,0,2) = f(1, [f(2,0,1)], [f(2,0,1)+1+1]) = f(1,1,3) = 2^3(1+2)-3-2 = 19;
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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