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 A090787 Number of ways to get n by evaluating 1 (+ or *) 2 (+ or *) 3 ... (+ or *) m for some positive integer m. No parentheses are allowed and the usual order of precedence (* before +) is followed. 0
 1, 1, 1, 0, 1, 2, 1, 0, 1, 2, 1, 0, 0, 2, 3, 1, 0, 0, 1, 2, 2, 1, 0, 1, 3, 3, 2, 2, 2, 1, 1, 3, 2, 0, 2, 3, 1, 1, 3, 4, 2, 1, 1, 2, 3, 3, 4, 2, 1, 2, 2, 1, 0, 3, 6, 5, 3, 1, 3, 3, 2, 3, 2, 3, 5, 5, 3, 4, 6, 4, 2, 1, 2, 4, 4, 5, 6, 7, 5, 2, 2, 2, 3, 5, 6, 4, 2, 6, 7, 4, 4, 4, 2, 2, 7, 9, 6, 3, 4, 7, 6, 4, 2, 4, 8 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,6 COMMENTS Sequence suggested by Leroy Quet in SeqFan memo 3500 dated Feb 02 2004, where the first fifteen terms were given. LINKS EXAMPLE a(55)=6, since 55 = 1+2+3+4+5+6+7+8+9+10 = 1*2*3+4+5+6+7+8+9+10 = 1*2+3+4*5+6+7+8+9 = 1+2+3+4+5*6+7+8 = 1*2*3+4+5*6+7+8 = 1+2*3*4+5*6. CROSSREFS Sequence in context: A155077 A170968 A114114 * A229707 A262680 A191329 Adjacent sequences:  A090784 A090785 A090786 * A090788 A090789 A090790 KEYWORD nonn AUTHOR John W. Layman, Feb 09 2004 STATUS approved

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Last modified August 23 22:45 EDT 2019. Contains 326254 sequences. (Running on oeis4.)