46436

Appears in sequences

• Heptagonal (or 7-gonal) pyramidal numbers: a(n) = n*(n+1)*(5*n-2)/6.at n=38A002413
• Expansion of 1/(1 - x*A001764(x/(1-x))/(1-x)).at n=8A186185
• Even heptagonal pyramidal numbers.at n=27A218325