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0, 1, 2, 5, 20, 137, 1478, 22925, 481448, 13138193, 451749962, 19104365333, 974417603132, 58981977530777, 4179837144348686, 342799255549127837, 32212592211380729168, 3438255899105307857441, 413670348773363088131474, 55722273751954119897519653, 8352810415786907670280952420
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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PROG
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(Julia)
function A297629List(len::Int)
R = Array{BigInt}(len)
A = fill(BigInt(0), len+1); A[1] = 1
for n in 1:len
for k in n:-1:2 A[k] += A[k+1] end
for k in 2: 1:n A[k] += A[k-1] end
R[n] = A[2]
end
return R
end
println(A297629List(20))
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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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