Sha256: 46ede3730792014355bdaf82704ebfbf72fd5106c3d6fa06236c981cfe33e0e6
Contents?: true
Size: 474 Bytes
Versions: 5
Compression:
Stored size: 474 Bytes
Contents
# coding: utf-8
describe Integer, "#tetrahedral" do
# A000292
@seq = [0,1,4,10,20,35,56,84,120,165,220,286,364,455,560,
680,816,969,1140,1330,1540,1771,2024,2300,2600,
2925,3276,3654,4060,4495,4960,5456,5984,6545,7140,
7770,8436,9139,9880,10660,11480,12341,13244,14190,
15180]
@seq.each_with_index do |t, n|
it "returns #{t} for the #{n}#{n.ordinal} tetrahedral number" do
n.tetrahedral.should == t
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems