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 A025773 Expansion of 1/((1-x)(1-x^4)(1-x^7)). 0
 1, 1, 1, 1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 7, 8, 9, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 26, 27, 28, 30, 32, 33, 34, 36, 38, 39, 41, 43, 45, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 69, 71, 73, 75 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 COMMENTS Partitions into parts 1, 4, and 7. - Joerg Arndt, May 01 2014 LINKS FORMULA a(n) = floor((n^2+12*n+50+14*cos(n*Pi/2))/56). - Tani Akinari, May 01 2014 a(n)= +a(n-1) +a(n-4) -a(n-5) +a(n-7) -a(n-8) -a(n-11) +a(n-12). - R. J. Mathar, Aug 21 2014 CROSSREFS Sequence in context: A004524 A265409 A126257 * A308303 A285763 A294621 Adjacent sequences:  A025770 A025771 A025772 * A025774 A025775 A025776 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified September 26 14:45 EDT 2021. Contains 347668 sequences. (Running on oeis4.)