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 A248894 Numbers k such that both numbers k and k+1 are in the sequence A248903. 1
 17, 69, 70, 241, 405, 2606, 3339, 4116, 7116, 15148, 15149, 20162, 137633, 324410, 332504, 439298, 1012547, 1121608, 2482209, 5028662, 6330857, 7180864, 7180865, 9569168, 14452770, 17021632, 110229972, 110229973, 193329301 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS If k is in the set {69, 15148, 7180864, 110229972, ...} then both numbers k and k+1 are in the sequence. This means that k, k+1 and k+2 are in the sequence A248903. It seems that there exist more such numbers k. LINKS Table of n, a(n) for n=1..29. CROSSREFS Cf. A001359, A248891, A248903. Sequence in context: A294516 A209078 A244630 * A041556 A041558 A327495 Adjacent sequences: A248891 A248892 A248893 * A248895 A248896 A248897 KEYWORD nonn,more AUTHOR Jahangeer Kholdi and Farideh Firoozbakht, Nov 22 2014 EXTENSIONS a(13)-a(29) from Jinyuan Wang, Nov 28 2020 STATUS approved

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Last modified June 8 01:59 EDT 2023. Contains 363157 sequences. (Running on oeis4.)