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 A195850 Column 6 of array A195825. Also column 1 of triangle A195840. Also 1 together with the row sums of triangle A195840. 14
 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 4, 4, 4, 4, 5, 7, 10, 12, 13, 13, 13, 14, 16, 21, 27, 32, 34, 35, 36, 38, 44, 54, 67, 77, 83, 86, 89, 95, 107, 128, 152, 173, 186, 194, 202, 216, 242, 281, 328, 368, 396, 415, 434, 464, 514, 588, 672, 748, 803, 844 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 COMMENTS Note that this sequence contains three plateaus: [1, 1, 1, 1, 1, 1, 1], [4, 4, 4, 4, 4], [13, 13, 13]. For more information see A210843 and other sequences of this family. - Omar E. Pol, Jun 29 2012 LINKS FORMULA G.f.: Product_{k>=1} 1/((1 - x^(8*k))*(1 - x^(8*k-1))*(1 - x^(8*k-7))). - Ilya Gutkovskiy, Aug 13 2017 a(n) ~ exp(Pi*sqrt(n)/2) / (4*sqrt(2-sqrt(2))*n). - Vaclav Kotesovec, Aug 14 2017 PROG (GWbasic)' A program with two A-numbers: 10 Dim A074377(100), A057077(100), a(100): a(0)=1 20 For n = 1 to 60: For j = 1 to n 30 If A074377(j) <= n then a(n) = a(n) + A057077(j-1)*a(n - A074377(j)) 40 Next j: Print a(n-1); : Next n ' Omar E. Pol, Jun 10 2012 CROSSREFS Cf. A000041, A001082, A006950, A036820, A057077, A074377, A195825, A195830, A195848, A195849, A195851, A195852, A196933, A210964, A211971. Sequence in context: A120510 A029117 A308547 * A253593 A174901 A308411 Adjacent sequences:  A195847 A195848 A195849 * A195851 A195852 A195853 KEYWORD nonn AUTHOR Omar E. Pol, Oct 07 2011 STATUS approved

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Last modified April 8 08:54 EDT 2020. Contains 333313 sequences. (Running on oeis4.)