RosettaCodeData/Task/Magic-constant/Yabasic/magic-constant.basic

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sub a(n)
n = n + 2
return n*(n^2 + 1)/2
end sub
sub inv_a(x)
k = 0
while k*(k^2+1)/2+2 < x
k = k + 1
wend
return k
end sub
print "The first 20 magic constants are: "
for n = 1 to 20
print a(n), " ";
next n
print "\nThe 1,000th magic constant is ", a(1000), "\n"
for e = 1 to 20
print "10^", e using"##", ": ", inv_a(10^e) using "#########"
next e
end