305371
domain: N
Appears in sequences
- 2nd elementary symmetric function of the first n+1 positive integers congruent to 2 mod 3.at n=21A024391
- Triangular numbers representable as triangular(x)*triangular(y)+1.at n=24A226389
- a(n) = A000217(A000217(n)+1).at n=39A267707
- Numbers that start a run of four consecutive triangular numbers with four distinct prime factors.at n=30A349773