23661

Appears in sequences

• Duplicate of A024537.at n=11A018905
• Strong pseudoprimes to base 100.at n=31A020326
• a(n) = floor( a(n-1)/(sqrt(2) - 1) ), with a(0) = 1.at n=12A024537
• Consider all Pythagorean triples (X,X+1,Z) ordered by increasing Z; sequence gives X+1 values.at n=6A046090
• Related to Pythagorean triples: alternate terms of A001652 and A046090.at n=6A046727
• Eleventh column (m=10) of convolution triangle A059594.at n=6A059625
• Expansion of (1-x)^(-1)/(1+2*x-x^2).at n=12A077921
• Pell oblongs.at n=6A084159
• Expansion of g.f. x/(1 - x - 3*x^2 - x^3).at n=13A097076
• Divisors of 10^14 - 1.at n=13A106305
• Pythagorean triples of nearly isosceles triangle.at n=16A114336
• 9800*n^2-5740*n-4059.at n=1A118061
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (0, 0, 1), (0, 1, -1), (1, 0, -1), (1, 1, 0)}.at n=8A150342
• E.g.f. satisfies: A(x) = Sum_{n>=0} x^n/n! * A(x)^(n(n+1)).at n=5A155807
• a(n) = 676*n + 1.at n=34A158386
• Binomial transform of 1,0,1,0,2,0,4,0,8,0,16,...at n=13A171842
• a(n) = 6*a(n-1) - a(n-2) - 2 with n>1, a(0)=0, a(1)=1.at n=7A182435
• Number of n X 3 nonnegative integer arrays with each row and column increasing from zero by 0, 1, 2 or 3.at n=6A202919
• Number of nX7 nonnegative integer arrays with each row and column increasing from zero by 0, 1, 2 or 3.at n=2A202923
• T(n,k)=Number of nXk nonnegative integer arrays with each row and column increasing from zero by 0, 1, 2 or 3.at n=38A202924