133120

Appears in sequences

• Theta series of {D_10}* lattice.at n=17A008426
• Number of plane binary trees of size n+3 and contracted height n.at n=11A074092
• a(n)=(-1)^(n+1)*det(M(n)) where M(n) is the n X n matrix M(i,j)=min(abs(i-j),i).at n=16A080692
• a(n) = (8^n + 4^n)/2.at n=6A081337
• Square number array read by antidiagonals.at n=61A084061
• Fifth row of number array A084061.at n=6A084096
• a(n) = 4n^3 + 2n^2.at n=31A089207
• Expansion of (1-x-4x^2)/((1-2x)(1-8x^2)).at n=12A098657
• Smallest number beginning with the digits of n that has exactly n prime factors (counted with multiplicity).at n=12A109686
• a(n) = n*(1 + n^2)*2^n.at n=7A119635
• (n^3+n)*4^n.at n=4A127369
• a(n) = n^4*(n^2 + 1)/2.at n=8A168192
• a(n) = n^6*(n^3 + 1)/2.at n=4A168555
• Values of A007692(n) that are not of the form x^2 + y^2 + z^2 where x, y, z are nonzero integers.at n=11A273123
• Number of set partitions of [n] such that the difference between each element and its index (in the partition) is a multiple of seven.at n=18A274864
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal reflection by two tiles that are each fixed under horizontal reflection.at n=30A368221
• Numbers n such that each binary index k (from row n of A048793) has the same sum of binary indices A029931(k).at n=30A371732
• a(n) = (3*n - 2)^2*(3*n - 1)/2.at n=21A386906