138075

Appears in sequences

• Triangular numbers containing 2k digits in which the sum of the first k digits = that of the rest.at n=10A068898
• Structured tetrakis hexahedral numbers (vertex structure 5).at n=34A100174
• Largest denominator used in the Egyptian fraction representation of n/(n + 1) by the greedy algorithm.at n=48A100695
• Triangular numbers which have one or more occurrences of exactly six different digits.at n=12A241789
• Numbers k such that {k + 2, k + 4} and {k^3 + 2, k^3 + 4} are twin prime pairs.at n=27A284058
• Number of relaxed compacted binary trees of right height at most one with minimal sequences between branch nodes except after the last branch node on level 0.at n=8A288953
• Odd multiplicative orders of 2+-i modulo primes p == 3 (mod 4).at n=6A385217