17985

Appears in sequences

• Rhombic dodecahedral numbers: a(n) = n^4 - (n - 1)^4.at n=16A005917
• a(n) = n*(n^2 + 1)/2.at n=33A006003
• Decimal part of cube root of a(n) starts with 2: first term of runs.at n=25A034128
• a(n) = a(n-1) + 2*a(floor(n/2)) if n > 0, otherwise 1.at n=30A058039
• Row sums of triangle A074135.at n=32A074132
• Sum of terms in each group in A074147.at n=32A074149
• Maximal troughs in decimal expansions of Pi: positions of troughs equal to 8.at n=21A105276
• a(0)=1, a(1)=1, a(n) = 17*a(n/2) for n=2,4,6,..., a(n) = 16*a((n-1)/2) + a((n+1)/2) for n=3,5,7,....at n=15A116523
• a(n) = 529*n - 1.at n=33A158365
• a(n) = 34*n^2 - 1.at n=22A158588
• a(n) = Least i in range [A165598(n),A165598(n+1)] for which abs(A165597(i)) gets the maximum value in that range.at n=25A165599
• Number of, not necessarily connected, regular simple graphs on n vertices with girth exactly 4.at n=16A198314
• Number of (w,x,y) with all terms in {0,...,n} and even range.at n=32A212975
• Number of length n arrays of permutations of 0..n-1 with each element moved by -2 to 2 places and every three consecutive elements having its maximum within 3 of its minimum.at n=22A263691
• E.g.f. A(x) satisfies: A(x) = exp( Integral B(x) dx ) such that B(x) = exp(-x) * exp( Integral A(x) dx ), where the constant of integration is zero.at n=9A266328
• Row 5 of A277710: Positions of 5's in A264977; positions of 10's in A277330.at n=36A277715
• 36-gonal numbers: a(n) = n*(17*n-16).at n=33A282853
• Number of partitions of n into at most 1^2 copy of 1, 2^2 copies of 2, 3^2 copies of 3, ... .at n=44A303944
• Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.at n=9A304889
• a(n) = (1/2)*(n^3 + n*(n mod 2)).at n=32A317614