751689

Appears in sequences

• a(n) = n*(n-1)^4/2.at n=18A019583
• Numbers k that divide the (right) concatenation of all numbers <= k written in base 17 (most significant digit on left).at n=27A029462
• The terms of A073213 (sums of two powers of 17) divided by 2.at n=19A073221
• Permutational numbers A134640 which are squares.at n=9A134741
• Squares n^2 that become prime after omitting all ones in their decimal expansion.at n=16A175983
• Number of (n+1)X2 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.at n=6A204223
• Number of (n+1)X8 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.at n=0A204229
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.at n=21A204230
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.at n=27A204230
• Number of n X 4 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically.at n=27A207399
• Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y<2z.at n=34A212503
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.at n=21A235406
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.at n=27A235406
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise.at n=21A235441
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise.at n=27A235441
• Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.at n=0A253374
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.at n=21A253375
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.at n=27A253375
• Squares not divisible by 10 with digits d_1, d_2, ... d_k such that d_1^2 + ... + d_k^2 is a square.at n=27A254959
• Numbers n such that n^3-1 is a sum of cubes in 1 way and a difference of cubes in 2 ways.at n=23A281789