A382796 Numbers that can be represented as the sum of two distinct Ulam numbers in more than one way.

5, 7, 9, 10, 12, 14, 15, 17, 19, 20, 21, 22, 24, 27, 29, 30, 31, 32, 34, 37, 39, 40, 41, 42, 44, 46, 49, 50, 51, 52, 54, 55, 56, 58, 59, 60, 61, 63, 64, 65, 66, 68, 70, 71, 73, 74, 75, 76, 78, 79, 80, 81, 83, 84, 85, 86, 88, 89, 90, 91, 93, 95, 98, 100, 101

Offset: 1

Author

Shyam Sunder Gupta, Apr 05 2025

Keywords

• nonn

Examples

			10 is in the sequence because 10 = 2 + 8 = 4 + 6, where 2, 4, 6, and 8 are distinct Ulam numbers.
		

Links

• Shyam Sunder Gupta, Table of n, a(n) for n = 1..10000
• Shyam Sunder Gupta, Ulam Numbers. In: Exploring the Beauty of Fascinating Numbers. Springer Praxis Books(). Springer, Singapore, (2025).

Crossrefs

Cf. A002858, A033629, A138892.