54758

Appears in sequences

• Numbers whose square with its last digit deleted is also a square.at n=23A031149
• Numerators of continued fraction convergents to sqrt(160).at n=11A041294
• Numbers k such that k^2 is formed from two subsquares that overlap in a single digit.at n=19A048422
• Row 3 of A007754.at n=36A058794
• a(n) = 6*a(n-1) + a(n-2), starting with a(0)=2 and a(1)=6.at n=6A085447
• Numbers n such that 2*p(n)+3, 2*p(n+1)+3, 2*p(n+2)+3 are consecutive primes, where p(i) denotes the i-th prime.at n=34A088066
• a(n) = n^3 - 3*n.at n=38A121670
• Numbers n such that (n^2-4)/10 is a square.at n=2A239364
• Let p = n-th prime == 3 mod 8; a(n) = (sum of quadratic residues mod p that are < p/2) + (sum of all quadratic residues mod p).at n=20A282727
• a(n) = L_n(n), where L_n(x) is the Lucas polynomial.at n=6A320570
• Table read by antidiagonals upward: T(n,k) is the number of ways to move a chess queen from (1,1) to (n,k) in the first quadrant using only up, right, and diagonal up-left moves.at n=33A334017
• Numbers k such that A073734(k) is neither squarefree nor a prime power.at n=26A365899
• Number of corona for a hexagon of edge n with diamonds of side 1.at n=5A380346
• Triangle read by rows: T(n,k) is the number of open meanders with 2n crossings and k exterior top arches, 0 <= k <= n.at n=50A380369