A109989 4-almost primes (A014613) ordered alphabetically by where they occur in A000052.

88, 84, 81, 54, 56, 40, 90

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. A109987 is semiprimes ordered alphabetically by where they occur in A000052. A109988 is 3-almost primes ordered alphabetically by where they occur in A000052.

Examples

			a(1) = 88 because eighty-eight is the first 4-almost prime in alphabetical order, there being no 1-digit 4-almost primes.
a(2) = 84 because eighty-four is the second 2-digit 4-almost prime in alphabetical order.
		

Crossrefs

Cf. A000052, A014613, A109986, A109987, A109988.