63037domain: NAppears in sequencesIndices of decagonal numbers (A001107) that are also triangular (A000217).at n=8A133217Numbers k such that k and k^2 use only the digits 0, 3, 6, 7 and 9.at n=27A136944Numbers k such that 6*k + 1 is a prime that can be written as p*q + 2, with p and q being consecutive primes.at n=20A342564