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 A225893 Numbers of the form p^2 * (p^2 + 1), where p = A224718. 0
 2450, 2827442, 3420650, 131091050, 607597850, 1387525250, 3262865762, 3969189002, 4362536450, 7370136650, 8882968250, 38513866250, 43618113650, 96254752250, 110842051970, 123657370850, 135755034050, 170940489050, 304758650450, 328385729450, 472300879322 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The sequence A224718 of Zak Seidov, about prime numbers p such that p^2+1 is not squarefree. LINKS Table of n, a(n) for n=1..21. MATHEMATICA p = Select[Prime[Range[250]], !SquareFreeQ[#^2+1]&]; p^2 * (p^2+1) CROSSREFS Cf. A224718. Sequence in context: A035772 A107568 A035875 * A043620 A282872 A191383 Adjacent sequences: A225890 A225891 A225892 * A225894 A225895 A225896 KEYWORD nonn AUTHOR Rafael Parra Machio, May 20 2013 STATUS approved

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Last modified July 13 15:08 EDT 2024. Contains 374284 sequences. (Running on oeis4.)