A362466 First occurrence of n in A362465 or -1 if n is not a term in A362465.

1, 0, 3, 29, -1, 521, -1, 31751, -1, 47973321, -1

Offset: 2

Author

Karl-Heinz Hofmann and Peter Munn, Apr 24 2023

Keywords

• more
• sign

Comments

All terms a(n) for even n > 4 are conjectures and conjectured to be -1. This follows from the reason derived from Polignac's conjecture that is described in A362465.

The requirements for the truth of the above conjecture about this sequence seem to be notably weaker than for Polignac's conjecture.

Examples

			a(5) = 29 because it is the least number that cannot be expressed as a sum of more than 1 and fewer than 5 consecutive signed primes. The example in A362465 shows that there is a solution for 29 with 5 consecutive signed primes, but not with more than 1 and fewer than 5.
		

Crossrefs

Cf. A362465.