76069501250
domain: N
Appears in sequences
- a(n) = floor( a(n-1)/(sqrt(2) - 1) ), with a(0) = 1.at n=29A024537
- Numbers k such that k*(k - 1)/2 is a square.at n=15A055997
- Solutions k to the Diophantine equation k = 2n^2 = m^2+1.at n=7A088920
- Expansion of g.f. (1-x-x^2)/(1-x-3*x^2-x^3).at n=30A097075
- a(n) = 2*A079291(n) (twice squares of Pell numbers).at n=15A114619
- Consider all Pythagorean triples (X,X+1,Z) ordered by increasing Z; sequence gives Z-X values.at n=14A115599
- Binomial transform of 1,0,1,0,2,0,4,0,8,0,16,...at n=30A171842