# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a210478 Showing 1-1 of 1 %I A210478 #16 May 08 2012 00:01:17 %S A210478 1,1,2,4,10,23,63,155,448,1152,3452,9158,28178,76539,240370,665129, %T A210478 2123439,5964691,19302315,54898415,179696520 %N A210478 Meandric numbers for a river crossing up to 17 parallel roads at n points. %C A210478 Number of ways that a river (or directed line) that starts in the South and flows East can cross up to 17 parallel East-West roads n times. %C A210478 Sequence derived from list of solutions described in A206432. %Y A210478 Cf. A005316 (sequence for one road; extensive references and links). %Y A210478 Cf. A076876 (sequence for two parallel roads). %Y A210478 Cf. A204352, A208062, A208126, A208452, A208453, A209383, A209621, A209622, A209626, A209656, A209657, A209660, A209707, A210344, A210478, A210567, A210592 (sequences for 3 to 19 parallel roads). %Y A210478 Cf. A206432 (sequence for unlimited number of parallel roads). %Y A210478 Cf. A076875, A076906, A076907. %K A210478 nonn,more %O A210478 0,3 %A A210478 _Robert Price_, May 07 2012 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE