81225

Appears in sequences

• Squares formed by concatenating other squares, not ending in 0.at n=32A009404
• Squares of odd square pyramidal numbers.at n=4A014797
• a(n) = (8*n + 5)^2.at n=35A017126
• a(n) = (9*n + 6)^2.at n=31A017234
• a(n) = (10*n + 5)^2.at n=28A017330
• a(n) = (11*n + 10)^2.at n=25A017510
• a(n) = (12*n + 9)^2.at n=23A017630
• Smallest nontrivial extension of n-th square which is a square not ending 00.at n=8A030688
• Squares which are the concatenation of two nonzero squares.at n=15A039686
• Squares with initial digit '8'.at n=9A045792
• Squares composed of two '1-digit' overlapping subsquares.at n=1A048421
• Recip transform of 2*(1 + x^4 + x^5)-1/(1-x).at n=9A049158
• a(n+1) is the smallest square ending with a(n), initial term is 5.at n=4A061839
• Duplicate of A061839.at n=3A065779
• k^2 is a term if k^2 + (k-1)^2 and k^2 + (k+1)^2 are primes.at n=12A075577
• Least square k^2 > n^2 whose decimal expansion ends in n^2.at n=35A090292
• Duplicate of A061839.at n=3A095241
• Left truncatable squares, ending in 5.at n=18A117246
• Squares which are concatenation of two positive squares with possible intervening zeros.at n=16A147608
• Numbers that are the squares of the product of three distinct primes.at n=29A162143