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 A045807 7-ish numbers (end in 53, 71, 79, 97). 1
 53, 71, 79, 97, 153, 171, 179, 197, 253, 271, 279, 297, 353, 371, 379, 397, 453, 471, 479, 497, 553, 571, 579, 597, 653, 671, 679, 697, 753, 771, 779, 797, 853, 871, 879, 897, 953, 971, 979, 997, 1053, 1071, 1079, 1097, 1153, 1171, 1179, 1197, 1253, 1271 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..1000 FORMULA Empirical G.f.: x*(53+18*x+8*x^2+18*x^3+3*x^4)/(1-x-x^4+x^5). [Colin Barker, Jan 23 2012] PROG (Haskell) import Data.List (findIndices) a045807 n = a045807_list !! (n-1) a045807_list = findIndices (`elem` [53, 71, 79, 97]) \$ cycle [0..99] -- Reinhard Zumkeller, Jan 23 2012 CROSSREFS Cf. A045800-A045809. Cf. A045572, A045797, A045798. Sequence in context: A223091 A301479 A244187 * A007644 A136073 A133187 Adjacent sequences: A045804 A045805 A045806 * A045808 A045809 A045810 KEYWORD nonn,base,easy AUTHOR EXTENSIONS More terms from Erich Friedman. STATUS approved

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Last modified March 26 06:47 EDT 2023. Contains 361529 sequences. (Running on oeis4.)