A179216 Permutation of triangular array of numbers (greater than 1) arranged by prime signature.

2, 4, 3, 6, 9, 5, 8, 10, 25, 7, 12, 27, 14, 49, 11, 16, 18, 125, 15, 121, 13, 24, 81, 20, 343, 21, 169, 17, 30, 40, 625, 28, 1331, 22, 289, 19, 32, 42, 54, 2401, 44, 2197, 26, 361, 23, 36, 243, 66, 56, 14641, 45, 4913, 33, 529, 29, 48, 100, 3125, 70, 88, 28561, 50, 6859

Offset: 0

Author

Will Nicholes, Jul 10 2010

Keywords

• nonn
• tabl

Comments

The left diagonal is the sequence of primes (A000040). The right diagonal is sequence A025487 (least prime signatures).

Links

• Will Nicholes, Iterative mapping of prime signatures.

Crossrefs

Cf. A095904, A179217, A179218, A179221, A179222, A179225, A179226, A179228.

Formula

a(n) = A061579(A095904(n))