154290

Appears in sequences

• a(n) = t(n)_t(n) where t() = triangular numbers A000217.at n=22A122628
• Triangular numbers which are sums of 4 consecutive primes.at n=15A173420
• Least triangular number representable as a sum of n consecutive triangular numbers, or -1 if no such triangular number exists.at n=35A238017
• Triangular numbers which have one or more occurrences of exactly six different digits.at n=15A241789
• Number of Lyndon compositions (aperiodic necklaces of positive integers) with sum n and adjacent parts (including the last with the first part) being coprime.at n=23A318745
• Triangular numbers which are products of five distinct primes.at n=36A357590