66657

Appears in sequences

• Numbers k such that the smoothly undulating palindromic number(18*10^k - 81)/99 is a prime.at n=12A062214
• a(n) = floor( sum(k=0, infinity, k^n/(k!)^2 ) ); related to generalized Bell numbers.at n=12A086880
• a(n) = (9*n^4+10*n^3-3*n^2-4*n)/12.at n=17A172045
• Number of integer partitions of 2n with reverse-alternating sum -2.at n=32A344741