27630

Appears in sequences

• Consider the Diophantine equation x^3 + y^3 = z^3 - 1 (x < y < z) or 'Fermat near misses'. The values of z (see A050787) are arranged in monotonically increasing order. Sequence gives values of y.at n=22A050789
• Numbers n such that phi(n)=2*reversal(n).at n=1A114930
• Number of 8X8 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.at n=22A156397
• a(n) = 3*a(n-1) - 2*a(n-2) with a(0)=36 and a(1)=90.at n=9A182467
• E.g.f. A(x) satisfies [x^k] A(x)^(n*(n+1)/2+1) = 0 for k = n*(n-1)/2+2 through k = n*(n+1)/2+1 for n >= 1, with a(0) = a(1) = 1.at n=7A377105