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%I #7 Jul 27 2021 23:12:54
%S 8,9,14,15,19,24,26
%N Number the letters of English alphabet from 1 to 26; sequence specifies capital letters which are indistinguishable after 180-degree rotation.
%Y Cf. A083131, A083132, A083133.
%K word,nonn,fini,full
%O 1,1
%A Croft Warn (c_warn2000(AT)yahoo.com), Jun 03 2003