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 A321235 Haiku numbers. 1
 77777, 101777, 102777, 103777, 104777, 105777, 106777, 107177, 107277, 107377, 107477, 107577, 107677, 107727, 107737, 107747, 107757, 107767, 107771, 107772, 107773, 107774, 107775, 107776, 107778, 107779, 107787, 107797, 107877, 107977 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS These numbers are haiku when written in English (including the 'and' between the hundreds and tens or units). A haiku is a three-line poem with 5 syllables in the first line, seven in the second and five in the third. Apparently the actual criterion is that there are 17 syllables, as words can be broken across lines: e.g.,     One hundred and sev-     en thousand one hundred and     seventy-seven. - Robert Israel, Nov 11 2018 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE 77777 is a haiku: Seventy-seven thousand, seven hundred and seventy-seven. MAPLE filter:= proc(n) uses StringTools; local t; t:= convert(n, english, 'And'); t:= subs("ninety"="eighty", Split(t, "- ")); # Maple thinks "ninety" has 3 syllables convert(map(SyllableLength, t), `+`)=17 end proc: select(filter, [\$1..110000]); # Robert Israel, Nov 11 2018 CROSSREFS Sequence in context: A133971 A133973 A133974 * A266967 A061528 A210141 Adjacent sequences:  A321232 A321233 A321234 * A321236 A321237 A321238 KEYWORD nonn,word,base,fini AUTHOR Matthew Scroggs, Nov 01 2018 STATUS approved

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Last modified January 16 05:22 EST 2022. Contains 350374 sequences. (Running on oeis4.)