106780

Appears in sequences

• Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n; then a(n) is the trace of M(n)^(-7).at n=32A114359
• Number of -n..n arrays x(0..4) of 5 elements with zero sum, and adjacent elements not equal modulo three (with -1 modulo 3 = 2).at n=14A199912
• G.f.: exp( Sum_{n>=1} x^n/n * Product_{d|n} (1 + d*x^n)^d ).at n=26A205482
• Number of (w,x,y,z) with all terms in {0,...,n} and (least gapsize)<2.at n=23A212896
• Practical numbers q with q + 2 and q^2 + 2 both practical.at n=40A294225