A109987 Semiprimes ordered alphabetically by where they occur in A000052.

4, 9, 6, 85, 87, 86, 82, 15, 58, 55, 51, 57, 49, 46, 14, 95, 94, 91, 93, 74, 77

Offset: 1

Author

Jonathan Vos Post, Jul 07 2005

Keywords

• base
• easy
• nonn
• word

Comments

A109986 is primes ordered alphabetically by where they occur in A000052. A109988 is 3-almost primes ordered alphabetically by where they occur in A000052.

Examples

			a(1) = 4 because four is the first semiprime in alphabetical order.
a(4) = 85 because eighty-five is the first 2-digit semiprime in alphabetical order.
		

Crossrefs

Cf. A000052, A001358, A109986, A109988.