3 lines
114 B
APL
3 lines
114 B
APL
nStep ← {⊃(1↓⊢,+/)⍣(⍺-1)⊢⍵}
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nacci ← 2*0⌈¯2+⍳
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↑((⍳10)nStep¨⊂)¨(nacci¨2 3 4),⊂2 1
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