A224714 The number of unordered partitions {a,b} of the odd numbers 2n-1 such that one of a and b is composite and the other is prime.

0, 0, 0, 1, 2, 4, 3, 4, 6, 5, 6, 8, 7, 9, 9, 8, 9, 11, 11, 10, 12, 11, 12, 14, 13, 15, 15, 14, 16, 16, 15, 16, 18, 18, 17, 19, 18, 19, 21, 21, 20, 22, 21, 23, 23, 22, 24, 24, 24, 23, 25, 24, 25, 27, 26, 27, 29, 28, 30, 30, 30, 30, 30, 30, 29, 31, 30, 32, 32

Offset: 1

Author

J. Stauduhar, Apr 21 2013

Keywords

• nonn

Links

• J. Stauduhar, Table of n, a(n) for n = 1..10000

Crossrefs

Subsequence of A224712.