Search: id:A054971 Results 1-1 of 1 results found. %I A054971 %S A054971 1,2,5,16,38,44,156,583,1359,1470,1556,53537,158476,161656,171657, %T A054971 190914,371778,382173,615769,1207698,1686537,16943262,88274141, %U A054971 496329416,765609041,1820198063,2497949426,2850685772,15911875336 %N A054971 n(5n-3)/2 is a palindromic heptagonal number. %H A054971 P. De Geest, Palindromic Heptagonals %Y A054971 Cf. A054910, A000566. %Y A054971 Sequence in context: A139022 A053683 A082085 this_sequence A124720 A076958 A163825 %Y A054971 Adjacent sequences: A054968 A054969 A054970 this_sequence A054972 A054973 A054974 %K A054971 nonn,base %O A054971 1,2 %A A054971 Jeffrey Heleen (meriadoc(AT)cheshire.net), May 26 2000 Search completed in 0.001 seconds