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Possibly can be, but note the number 1 as a hint...
...close :-) So, on the green fields we have numbers: 2,3,5,7,11,13,...
Prime #'s. Seems to be a spiral of numbers - so 17,19,23
Yes! It is the spiral of prime numbers. It was discovered by the mathematician Stanislav Ulam in 1963 so it is called the Ulam spiral. Spiral of a larger size with points representing primes is beautiful.
Great puzzle. Thank you.