Neim, 10 9 bytes

A000012ᛄ> 

Explanation:

A Push 42 000012 Push 4 or A007395 Push 7395 ᛄ Modulo 2 > Increment 

A000012 (all zeroes) and A007395 (all twos)

A function that takes the input on the top of the stack and leaves the output on the top of the stack.

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Neim, 10 9 bytes

A000012ᛄ> 

Explanation:

A Push 42 000012 Push 4 or A007395 Push 7395 ᛄ Modulo 2 > Increment 

A000012 (all ones) and A007395 (all twos)

A function that takes the input on the top of the stack and leaves the output on the top of the stack.

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Neim, 10 9 bytes

A000012/2ᛄ𝕋 

Explanation:

A Push 42 000012 Push 4 or A007395 Push 7395 ᛄ Modulo 2 > Increment 

A000012 (all zeroes) and A007395 (all twos)

A function that takes the input on the top of the stack and leaves the output on the top of the stack.

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Neim, 10 9 bytes

A000012ᛄ> 

Explanation:

A Push 42 000012 Push 4 or A007395 Push 7395 ᛄ Modulo 2 > Increment 

A000012 (all zeroes) and A007395 (all twos)

A function that takes the input on the top of the stack and leaves the output on the top of the stack.

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Neim, 10 bytes

A000004/ᛄ𝕋 

A000004 and A000027

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Neim, 10 9 bytes

A000012/2ᛄ𝕋 

Explanation:

A Push 42 000012 Push 4 or A007395 Push 7395 ᛄ Modulo 2 > Increment 

A000012 (all zeroes) and A007395 (all twos)

A function that takes the input on the top of the stack and leaves the output on the top of the stack.

Try it online!