42623

Appears in sequences

• Every suffix prime and no 0 digits in base 7 (written in base 7).at n=19A024782
• [ exp(1/18)*n! ].at n=7A030883
• Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 8 (most significant digit on right).at n=10A061961
• a(n) is the smallest number representable in exactly n ways as a sum of 2 palindromes (each of them >= 0).at n=43A115336
• a(n) = 74*n^2 - 1.at n=23A158744
• G.f. A(x) satisfies: x = Sum_{n>=1} 1/A(x)^(6*n) * Product_{k=1..n} (1 - 1/A(x)^(2*k-1)).at n=6A214693
• a(n) is the least positive integer that can be expressed as the sum of two distinct nonzero decimal palindromes in exactly n ways.at n=44A364836