27665282700
domain: N
Appears in sequences
- Numbers which are powerful(1) (A001694) and triangular at the same time.at n=9A113938
- Triangular numbers representable as 3 * x^2.at n=6A226500
- Triangular numbers that are the sum of 2 consecutive terms of A130518.at n=17A247247
- The area of the n-th convex honeycomb formed by spirals of incrementing strips of hexagons.at n=26A373081