51412

Appears in sequences

• 'Connected' alternating sign n X n matrices, i.e., not made from smaller blocks.at n=7A051055
• Numbers n such that sigma(reverse(n)) = phi(n).at n=20A070856
• a(n) = floor(11^n/7^n).at n=24A094993
• Smallest k such that k^2 + 1 is divisible by A002144(n)^3.at n=7A145296
• a(n) is smallest number such that a(n)^2 + 1 is divisible by 61^n.at n=3A218716
• Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having nonzero determinant, with rows and columns of the latter in lexicographically nondecreasing order.at n=17A227554
• Numbers k such that k + (sum of digits of k) and k + (product of digits of k) contain the same distinct digits of k.at n=32A248718
• G.f. A(x) satisfies A(x) = 1/(1 - x/(1 - x*A(x)))^4.at n=7A349018