74907

Appears in sequences

• 4-dimensional pyramidal numbers: a(n) = (3*n+1)*binomial(n+2, 3)/4. Also Stirling2(n+2, n).at n=27A001296
• Number of 5-tuples (v1,v2,v3,v4,v5) of nonnegative integers less than n such that v1 <= v4, v1 <= v5, v2 <= v4, v2 <= v5 and v3 <= v4.at n=13A085463
• a(1)=1, a(2)=2, a(3)=11, a(4)=19; a(n) = a(n-4) + sqrt(60*a(n-2)^2 + 60*a(n-2) + 1) for n >= 5.at n=11A103200
• Numbers k such that 60*k^2 + 60*k + 1 is a square.at n=12A105076
• The Wiener index of the Dutch windmill graph D(6,n) (n>=1).at n=40A180578
• Number of n X 5 binary arrays without the pattern 0 1 diagonally or vertically.at n=17A188839
• Numbers n such that n * x/(x-1) produces a rotation of the digits in n for some value of x.at n=40A288669