155551

Appears in sequences

• Beginning with 2, smallest palindrome >= the previous term such that every concatenation is a prime.at n=21A088093
• a(n) = n 5's sandwiched between two 1's.at n=4A205085
• Number of nX3 0..1 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=9A279129
• Palindromes that are multiples of 11 and whose digit sum is also a multiple of 11.at n=20A346221