26409

Appears in sequences

• Number of partitions in parts not of the form 15k, 15k+1 or 15k-1. Also number of partitions with no part of size 1 and differences between parts at distance 6 are greater than 1.at n=50A035955
• Numbers whose square is a zeroless pandigital number (i.e., use the digits 1 through 9 once).at n=23A071519
• Numbers n such that n contains exactly 5 digits, all distinct, and n^2 contains exactly 9 distinct digits.at n=23A204691
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and 2w+x+y>1.at n=19A211618
• Numbers whose square contains all of the digits 1 through 9.at n=23A294661
• G.f.: A(x) = Sum_{n>=0} x^n * (1 - x*A(x)^(2*n))/(1 - x*A(x)^(2*n+1)).at n=9A307228