237705

Appears in sequences

• Triangular numbers containing 2k digits in which the sum of the first k digits = that of the rest.at n=20A068898
• Number of n X 2 zero-sum -1..1 arrays with rows and columns lexicographically nondecreasing.at n=21A202027
• Triangular numbers n such that each decimal digit of n is equal to the difference of at least two other digits of n.at n=22A255917
• a(n) = n*(n + 7)*(n + 14)*(n + 21)/24.at n=39A264447