73810

Appears in sequences

• Even square pyramidal numbers.at n=29A015222
• 1 + 2*n^2 + 3*n^3 + 4*n^4 + 5*n^5 + 6*n^6 + 7*n^7 + 8*n^8.at n=3A209267
• Number of blocks in a Steiner Quadruple System of order A047235(n+1).at n=39A228124
• a(n) = n*(2*n + 1)*(4*n + 1)/3.at n=30A258582
• Palindromic numbers in bases 3 and 9 written in base 10.at n=77A259386
• Triangle read by rows: T(n,k), n>=2, 1 <= k <= n-1, is the number of permutations in S_n in which there are k different values for the values mod n of the differences between adjacent elements when written in row notation.at n=47A294789