28928

Appears in sequences

• Sorted elements of table (A035002) of a(m,n) = sum(a(m-k,n), k=1..m-1)+sum(a(m,n-k), k=1..n-1).at n=44A035001
• Numerators of continued fraction convergents to sqrt(310).at n=10A041584
• Number of 2n-bead black-white reversible complementable necklaces with n black beads and fundamental period 2n.at n=12A045633
• a(n) in base 15 is a repdigit.at n=50A048339
• Number of lunar partitions of n: number of ways of writing n as a lunar sum of distinct terms, ignoring order.at n=33A087079
• Triangle T(n,k), 0<=k<=n, defined by T(n,k) = 0 if k<0 or k>n, T(0,0) = 1, T(n,k) = T(n,k-1)+T(n-1,k-1)+T(n-1,k)+T(n-1,k+1).at n=27A122479
• Nearest integer to 16^n/(Pi-3).at n=3A156240
• Number of binary strings of length n with equal numbers of 00001 and 10000 substrings.at n=15A164203
• Number of ways to place 2 nonattacking bishops on an n X n toroidal board.at n=15A177755
• Products of the 8th power of a prime and a distinct prime (p^8*q).at n=29A179668
• Number of obtuse isosceles triangles on an n X n grid.at n=17A190318
• Number of lattice paths from (0,0) to (n,n) that do not go below the x-axis or above the diagonal x=y and consist of steps U=(1,1), D=(1,-1), H=(1,0) and S=(0,1).at n=6A225042
• Sum of squared terms in rows of triangle A227311.at n=6A227313
• a(n) = ((n-1)^(n+1) + (-1)^n*(n+1)^(n-1))/(n^2).at n=6A234252
• Integers that reach the (47360, 29127) cycle described in A234534, after iterations of numerator(sigma(n)/n) = A017665(n).at n=2A249614
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 310", based on the 5-celled von Neumann neighborhood.at n=15A287604
• Values of n such that prime(n) does not divide any 10-digit pandigital number (i.e. any value in A050278).at n=10A292703
• a(n) = A341886(n)/2; numbers k such that A307437(k) is even.at n=9A341887