184123domain: NAppears in sequencesIndices of primes in the sequence defined by A(0) = 23, A(n) = 10*A(n-1) + 63 for n > 0.at n=21A101973Row sums of a number triangle related to the Pell numbers.at n=6A110328Number of partitions of n-1 boys and one girl with no couple.at n=40A120452The Hwang-Deutsch function f_3(n).at n=46A260996