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A359868
a(n) is the smallest prime q such that A305411(n) + q is a square.
0
13, 11, 19, 107, 101, 257, 467, 173, 167, 1601, 719, 701, 347, 569, 929, 1931, 479, 467, 719, 1163, 683, 1613, 2843, 941, 1997, 1307, 1907, 2549, 1823, 6869, 2957, 1487, 2141, 2777, 1931, 1823, 1811, 4253, 2273, 4877, 5711, 2663, 7673, 5081, 4871, 4799, 4643
OFFSET
1,1
COMMENTS
A305411 is conjectured to have only 103 terms.
EXAMPLE
A305411(2) = 5; 5 + 2 = 7, 5 + 3 = 8, 5 + 5 = 10, and 5 + 7 = 12 are not squares, but 5 + 11 = 16 = 4^2, so a(2) = 11.
CROSSREFS
KEYWORD
nonn
AUTHOR
Can Güllü, Jan 16 2023
STATUS
approved