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 A045804 4-ish numbers (end in 09, 41, 63, 87). 1
 9, 41, 63, 87, 109, 141, 163, 187, 209, 241, 263, 287, 309, 341, 363, 387, 409, 441, 463, 487, 509, 541, 563, 587, 609, 641, 663, 687, 709, 741, 763, 787, 809, 841, 863, 887, 909, 941, 963, 987, 1009, 1041, 1063, 1087, 1109, 1141, 1163, 1187, 1209, 1241 (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*(9+32*x+22*x^2+24*x^3+13*x^4)/(1-x-x^4+x^5). [Colin Barker, Jan 23 2012] PROG (Haskell) import Data.List (findIndices) a045804 n = a045804_list !! (n-1) a045804_list = findIndices (`elem` [9, 41, 63, 87]) \$ cycle [0..99] -- Reinhard Zumkeller, Jan 23 2012 CROSSREFS Cf. A045800-A045809. Cf. A045572, A045797, A045798. Sequence in context: A120932 A034925 A159754 * A322055 A198943 A000451 Adjacent sequences:  A045801 A045802 A045803 * A045805 A045806 A045807 KEYWORD nonn,base,easy AUTHOR EXTENSIONS More terms from Erich Friedman. STATUS approved

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Last modified March 25 12:11 EDT 2019. Contains 321470 sequences. (Running on oeis4.)