51142

Appears in sequences

• Numbers k such that 225*2^k+1 is prime.at n=43A032489
• a(n) is the number of digits in the decimal representation of the smallest power of 3 that contains n consecutive identical digits.at n=9A217186
• a(n) is the number of digits in the decimal representation of the smallest power of 3 that contains n consecutive identical digits.at n=10A217186
• Number T(n,k) of length 2n k-ary words, either empty or beginning with the first letter of the alphabet and using each letter at least once, that can be built by repeatedly inserting doublets into the initially empty word; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=31A256116
• Numbers k with the property that there exists a positive integer multiplier M such that M times the sum of the digits of k, multiplied further by the reversal of this product, gives k.at n=40A305131