28197

Appears in sequences

• Numerators of continued fraction convergents to sqrt(457).at n=7A041870
• a(n) is the (n+1)st (n+2)-gonal number.at n=38A064808
• Numbers n such that F_n(x) and F_n(1-x) have a common factor mod 2, with F_n(x) = U(n-1,x/2) the monic Chebyshev polynomials of second kind; this lists only the primitive elements of the set.at n=18A094425
• Smallest number k such that k^2 begins with n^3.at n=42A197722
• Left edge of the triangle A045975.at n=38A204556
• Number of n X 5 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=8A207166
• Partitions with parts repeated at most twice and repetition only allowed if first part has an odd index (first index = 1).at n=56A227134
• Positions of records in A096303.at n=17A229743
• 40-gonal numbers: a(n) = 38*n*(n-1)/2 + n.at n=39A261191
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 501", based on the 5-celled von Neumann neighborhood.at n=33A272566
• Triangle read by rows: T(n,k) is the number of chains in the poset of plane partitions ordered by inclusion that end with a plane partition of n and have length k.at n=30A389604